a-a a-b a-c aaa aab aac aad aao aas ab- aba abb abc abd abo abs ac- aca acb acc acd aco acs ad- ada adb adc add ado ads aoa aob aoc aod aoo aos as- asa asb asc asd aso ass baa bab bac bad bao bas bba bbb bbc bbd bbo bbs bca bcb bcc bcd bco bcs bda bdb bdc bdd bdo bds boa bob boc bod boo bos bsa bsb bsc bsd bso bss c-- caa cab cac cad cao cas cba cbb cbc cbd cbo cbs cca ccb ccc ccd cco ccs cda cdb cdc cdd cdo cds co- coa cob coc cod coo cos csa csb csc csd cso css daa dab dac dad dao das dba dbb dbc dbd dbo dbs dca dcb dcc dcd dco dcs dda ddb ddc ddd ddo dds doa dob doc dod doo dos dsa dsb dsc dsd dso dss oaa oab oac oad oao oas ob- oba obb obc obd obo obs oc- oca ocb occ ocd oco ocs oda odb odc odd odo ods oo- ooa oob ooc ood ooo oos os- osa osb osc osd oso oss saa sab sac sad sao sas sba sbb sbc sbd sbo sbs sca scb scc scd sco scs sda sdb sdc sdd sdo sds soa sob soc sod soo sos ss- ssa ssb ssc ssd sso sss

a-do aaaa aaab aaac aaad aaas aaba aabb aabc aabd aaca aacb aacc aacd aaco aacs aada aadc aads aaoo aasa aasc aasd aass abaa abab abac abad abas abb- abba abbb abbo abbs abca abcb abcc abcd abcs abda abdo aboa abob abod aboo abos abs- absa absd abss acaa acab acac acad acas acba acca accc accd acco accs acda acdb acdc acds acoa acod acos acsa acsc acsd acss adaa adab adac adad adao adas adba adbc adcc adcs adda addc addd addo adds adob adoc adod adoo ados adsa adso adss aoba aoca aocs aosd aoss asaa asab asac asad asao asas asba asbo asc- asca ascb ascc asco asda asdo asds asob asoc asod asos assa assc assd asso asss baaa baad baas baba babb babo babs bac- baca bacc baco bacs bada badb badd bado bads baos basa basc baso bass bbad bbas bbbb bbbs bbdd bbdo bcaa bcas bcbc bcbs bcca bccc bccs bcda bcds bcos bcsa bcsc bcss bdbc bddc bdos bdsd boab boac boad boas boba bobb bobo bobs boca boco bocs boda bodb bodo bods boob booc bood boos bosa bosc boso boss bsaa bsac bsas bsbd bscs bsod bsos bssc bssd c-bo c-cd caaa caab caac caas caba cabo cabs cac- caca cacc caco cada cadc cadd cado cads caod caos casa casb casc casd caso cass cbac cbbc cbbs cbca cbcc cbcs cbdb cbdc cbdo cbds cbsa cbsc ccaa ccab ccac ccad ccas ccba ccbc ccca cccb cccc cccs ccdc ccds ccob ccoc ccod ccsa ccsd ccss cdaa cdac cdad cdba cdcs cdda cddb cdos cdss coad coas coba cobb cobo cobs coca coco coda codd cods coob cood coos cosa cosc coso coss csaa csab csac csao csas cscb cscc cscd csco cscs csda csdb csob csos cssa cssd d-bo daab daad daas daba dabb dabo dabs daca dacs dada dado dads daos dasa dasb dasc dasd dass dbas dbcc dbcs dbos dbsa dbss dcas dcbc dcca dccb dccc dccs dcdb dcds dcos dcsc dcss dddd ddoc ddss doab doas doba dobb dobs doca doco docs dod- doda dodd dodo dods doob dood doos dosa doso doss dsac dsba dsbc dscc dscs dsda dsoa dsos dssa dssc oasc oass obad obas obba obbo obos obsd obss ocab ocac ocad ocas ocbc occa occc ocds ocos ocsa odac odas odbo odda oddd odds odoo odos odso ooaa ooba ooda oooo ooos oosa osas osba osca oscc osco osoo osos ossa ossb ossd osso s-os sa-c saab saac saad saas saba sabb sabc sabo sabs saca sacc sacd saco sacs sada sadb sadc sadd sado sads saos sasa sasc sasd saso sass sbaa sbac sbas sbbs sbca sbcc sbcs sbds sbsa sbsd scaa scab scac scad scas scba sccc sccs scda scdc scds scob scoo scsa scsc scsd scso sdba sdcc sdco sddc sdds sdsc sdss soad soas soba sobo sobs soca soco socs soda sodd sodo sods sood soos sosa soso soss ssaa ssab ssac ssao ssas ssca sscc sscs ssdc ssdd ssoc sssa sssb sssc ssss

-aaa- -abad aaaas aaadc aaaoc aaasa aaass aabaa aabba aacbc aacos aacsa aacsb aacss aadac aadas abaab ababa ababs abaca abaco abacs abada abasa abass abbac abbad abbas abbod abbos abcas abccc abcdb aboab aboad abobo abood aboso acaca acacb acads acass accad accas acdcs acoda acoss acsad acsdc adaba adada adado adads adasa addas addsa adobo adodb ads-b aoos asaba asabc asaco asada asado asasa asbad asbca asbos ascao asco- ascod asdas asocs asoda asodd asosa assab assac assad assas assoa assoc assos b-cas babas babbs babdo baboo babos bacab bacao bacas bacca bacco bacos badao badas badco baddo badoc badod badoo basab basad basca basco baso- bassa basso bo-bo boaco boada bobac boboc bobos bocac bocao bocas bocca bocoa bocsa bodas bodd- bodoc bodos booba boobs booco boosa bosas bosco boscs bossa bosso bsaba bscco c-a-c ca-ca caaba cabas cabob caboc cabod cabos cacao cacas caco- cacoa cacso cadac caddo cadoc cados caoba casas casca casco casos casso ccass ccccc cccsd co-bo co-co coadd coads cobas cobbs cocao cocas cocc- cocco cocoa cocos codas codco codo codos cooba coosa cos-b cosas cosca cosco csaba csobs csoda d-a-d daada daasa dabas dabba dabbs dabco dacca dacco daco- dadao dadas dadda daddo dadoo dados dasca dasds dassa dasso dbdos dccab ddddd do-do doaba doado dobbs dobos docos dodab dodad dodds dodoo dodos dooab doobs doodo doods dos-c dosas dosco dosso obaba obodo ocado occas ocdsb ocsod odaba oddba odssa oocss ooooo osada osado ososo ossos saaba saabo saabs saada saasa sabac sabas sabca sabda saboo sabsa sac-d sacas sacc- sacca sacco