-ic a-a a-b a-c a-i aaa aab aac aai aao aap aar aax ab- aba abb abc abi abo abp abr abx ac- aca acb acc aci aco acp acr acx ai- aia aib aic aii aio aip air aix aoa aob aoc aoi aoo aop aor aox ap- apa apb apc api apo app apr apx ar- ara arb arc ari aro arp arr arx ax- axa axi axo axp axr axx b-p baa bab bac bai bao bap bar bax bba bbb bbc bbi bbo bbp bbr bbx bca bcb bcc bci bco bcp bcr bcx bi- bia bib bic bii bio bip bir bix boa bob boc boi boo bop bor box bpa bpb bpc bpi bpo bpp bpr bpx bra brb bri bro brp brr brx bxb bxi bxo bxx c-- caa cab cac cai cao cap car cax cba cbb cbc cbi cbo cbp cbr cbx cca ccb ccc cci cco ccp ccr ccx ci- cia cib cic cii cio cip cir cix co- coa cob coc coi coo cop cor cox cpa cpb cpc cpi cpo cpp cpr cpx cra crb crc cri cro crp crr crx cxc cxi cxo cxp cxr cxx ia- iaa iab iac iai iao iap iar iba ibb ibc ibi ibo ibp ibr ibx ica icb icc ici ico icp icr iia iib iic iii iio iip iir iix io- ioa iob ioc ioi ioo iop ior ipa ipb ipc ipi ipo ipp ipr ipx ir- ira irb irc iri iro irp irr irx ixc ixi o-i oaa oab oac oai oao oap oar oax ob- oba obb obc obi obo obp obr obx oc- oca ocb occ oci oco ocp ocr ocx oia oib oic oii oio oip oir oo- ooa oob ooc ooi ooo oop oor oox op- opa opb opc opi opo opp opr opx or- ora orb orc ori oro orp orr orx ox- oxa oxb oxc oxi oxo oxx p-p paa pab pac pai pao pap par pax pba pbb pbc pbi pbo pbp pbr pbx pca pcb pcc pci pco pcp pcr pcx pia pib pic pii pio pip pir pix poa pob poc poi poo pop por pox ppa ppb ppc ppi ppo ppp ppr ppx pra prb prc pri pro prp prr prx pxc pxr ra- raa rab rac rai rao rap rar rax rba rbb rbc rbi rbo rbp rbr rbx rca rcb rcc rci rco rcp rcr rcx ria rib ric rii rio rip rir rix roa rob roc roi roo rop ror rox rpa rpb rpc rpi rpo rpp rpr rpx rra rrb rrc rri rrp rrr rxp rxr xaa xac xap xar xbc xbr xbx xcb xci xcp xcr xcx xia xic xii xio xix xoa xoc xoi xoo xop xor xox xpa xpb xpc xpo xpp xrc xrx xxi xxo xxp xxx

a-ii aaaa aaab aaac aaai aaap aaar aaba aabb aabc aabi aabp aaca aacb aacc aaci aaco aacp aacr aaib aaic aaii aaoo aapa aapc aapi aapo aara aarc aari aaro aarp abaa abab abac abai abap abar abax abb- abba abbb abbi abbo abbr abca abcb abcc abci abcp abcr abia abib abic abir aboa abob aboo abor abox abpa abpc abpi abpp abpr abra abrc abri abro acaa acab acac acai acap acar acba acca accc acci acco accp aci- acia acic acip acir acoa acop acor acpa acpi acpr acr- acra acrc acri acro acrr aiai aiba aibo aica aicc aicp aicr aiia aiib aiic aiir aioc aioi aipa aipi aira airi airo airp airx aixa aixi aoba aoca aopo aora aorb apac apai apao apap apar apax apba apbr apca apcb apcc apco apcr api- apia apic apio apip apix apo- apoc apoo apop apor apox appa appc appr appx apra aprc apri apro arab arac arai arap arar arax arba arbi arc- arca arci arco aria arib arii ario arip aroa arob aroi aroo aror arpa arpi arr- arra arrc arri arro arrr axar axi- axia axo- axoa axxo ba-i ba-x baaa baar baba babb babi babo babr bac- baca bacc baci baco baia baib baic baio bair baix bapa bapc bapi bapp bar- bara barb barc bari baro barr barx baxi bbbb bbci bbox bbpr bbrc bcaa bcap bcar bcbc bcbp bcca bccc bcci bcia bcor bcpp bcra biao biap biar biba bibb bibi bibo bica bicc bici bico bio- bioc bioi biox bipa bipp bira birb biri biro birr birx bixa bixi boab boac boai boar boba bobb bobi bobo boca boco boi- boii boob booc boop boor boox bopa bopp bor- bora bori boro borr boxa bpai bpcp bprc brab brac brai brao brax brca brcb bria bric brio brix broa brob broc broo bror brox brrr c-bo caaa caab caac caap caba cabi cabo cac- caca cacc caci caco cacr caia caib caic caio caip cair caix caoi caor capa capb capc capi capo capp capx cara carb carc cari caro carp carr carx caxa cbac cbar cbax cbbc cbca cbcc cbcp cbcr cbia cbir cbox cbpc cbpp cbxa ccaa ccab ccac ccai ccap ccar ccba ccbc ccca cccb cccc ccci cccp ccic ccii ccip ccir ccix ccob ccoc ccpa ccpp ccpr ccra ccrc ccri ccrp ccxi ciaa ciao ciar ciba cibc cibi cibo cica cicc cici cico cicr ciia ciii ciob cior cipa cipo cipp cira cirb circ ciri ciro cirr cixi coai coax coba cobb cobi cobo coca coco cocp coia coip coir coix coob coop copa copi copo copp copr cor- cora corb corc cori coro corp corr coxa cpaa cpac cpap cpbc cpca cpia cpic cpio cpix cpox cppa cpri crab crac crai crap crar crax crbc crca crcc crcr cria crib cric crip crob croc croo crop cror crpc cxii cxix cxpo cxro cxxi cxxx iaaa iaac iaai iaap iaba iaca iacc iacp iacr iaia iapa iapp iapx iara iarc ibac ibar ibca ibia ibox ibra ibrc ibri ibro icaa icab icac icai icao icap icar icbc icbp icca iccb