-ic a-a a-b a-c a-i aaa aab aac aad aah aai aan aao aas ab- aba abb abc abd abh abi abn abo abs ac- aca acb acc acd ach aci acn aco acs ad- ada adb adc add adh adi adn ado ads aha ahb ahc ahd ahh ahi ahn aho ahs ai- aia aib aic aid aih aii ain aio ais an- ana anb anc and anh ani ann ano ans aoa aob aoc aod aoh aoi aon aoo aos as- asa asb asc asd ash asi asn aso ass baa bab bac bad bah bai ban bao bas bba bbb bbc bbd bbh bbi bbn bbo bbs bca bcb bcc bcd bch bci bcn bco bcs bda bdb bdc bdd bdh bdi bdo bds bha bhb bhc bhd bhh bhi bho bhs bi- bia bib bic bid bih bii bin bio bis bna bnb bnc bnd bni bnn bno bns boa bob boc bod boh boi bon boo bos bsa bsb bsc bsd bsh bsi bsn bso bss c-- caa cab cac cad cah cai can cao cas cba cbb cbc cbd cbh cbi cbn cbo cbs cca ccb ccc ccd cch cci ccn cco ccs cda cdb cdc cdd cdh cdi cdn cdo cds ch- cha chb chc chd chh chi chn cho chs ci- cia cib cic cid cih cii cin cio cis cn- cna cnb cnc cnd cnh cni cnn cno cns co- coa cob coc cod coh coi con coo cos csa csb csc csd csh csi csn cso css daa dab dac dad dah dai dan dao das dba dbb dbc dbd dbh dbi dbn dbo dbs dca dcb dcc dcd dci dcn dco dcs dda ddb ddc ddd ddh ddi ddn ddo dds dh- dha dhb dhc dhd dhh dhi dho dhs di- dia dib dic did dih dii din dio dis dna dnb dnc dnd dnh dni dnn dno dns doa dob doc dod doh doi don doo dos dsa dsb dsc dsd dsh dsi dsn dso dss h-i haa hab hac had hah hai han hao has hba hbb hbc hbd hbh hbi hbn hbo hbs hca hcb hcc hcd hch hci hcn hco hcs hda hdb hdc hdd hdh hdi hdn hdo hds hha hhb hhc hhd hhh hhi hhn hho hhs hia hib hic hid hih hii hin hio his hna hnb hnc hnd hnh hnn hno hns hoa hob hoc hod hoh hoi hon hoo hos hsa hsb hsc hsd hsh hsi hsn hss i-d ia- iaa iab iac iad iah iai ian iao ias iba ibb ibc ibd ibh ibi ibn ibo ibs ica icb icc icd ich ici icn ico ics ida idb idc idd idh idi idn ido ids iha ihb ihc ihd ihh ihi ihn iho ihs iia iib iic iid iih iii iin iio iis in- ina inb inc ind inh ini inn ino ins io- ioa iob ioc iod ioh ioi ion ioo ios is- isa isb isc isd ish isi isn iso iss n-i naa nab nac nad nah nai nan nao nas nba nbb nbc nbd nbi nbn nbo nbs nca ncb ncc ncd nch nci ncn nco ncs nda ndb ndc ndd ndh ndi ndn ndo nds nha nhb nhc nhd nhh nhi nhn nhs nia nib nic nid nih nii nin nio nis nna nnb nnc nnh nni nnn nno nns no- noa nob noc nod noh noi non noo nos nsa nsb nsc nsd nsh nsi nsn nso nss o-i oaa oab oac oad oah oai oan oao oas ob- oba obb obc obd obh obi obn obo obs oc- oca ocb occ ocd och oci ocn oco ocs oda odb odc odd odh odi odn odo ods oha ohc ohd ohh ohi ohn oho ohs oia oib oic oid oii oin oio ois on- ona onb onc ond onh oni onn ono ons oo- ooa oob ooc ood ooh ooi oon ooo oos os- osa osb osc osd osh osi osn oso oss saa sab sac sad sah sai san sao sas sba sbb sbc sbd sbh sbi sbn sbo sbs sca scb scc scd sch sci scn sco scs sda sdb sdc sdd sdh sdi sdn sdo sds sh- sha shb shc shd shh shi shn sho shs sia sib sic sid sih sii sin sio sis sna snb snc snd sni snn sno sns soa sob soc sod soh soi son soo sos ss- ssa ssb ssc ssd ssh ssi ssn sso sss