-ic a-a a-b a-c a-i aaa aab aac aah aai aak aao aap aar ab- aba abb abc abh abi abk abo abp abr ac- aca acb acc ach aci ack aco acp acr aha ahb ahc ahh ahi ahk aho ahp ahr ai- aia aib aic aih aii aik aio aip air aka akb akc akh aki akk ako akp akr aoa aob aoc aoh aoi aok aoo aop aor ap- apa apb apc aph api apk apo app apr ar- ara arb arc arh ari ark aro arp arr b-p baa bab bac bah bai bak bao bap bar bba bbb bbc bbh bbi bbk bbo bbp bbr bca bcb bcc bch bci bck bco bcp bcr bha bhb bhc bhh bhi bhk bho bhp bhr bi- bia bib bic bih bii bik bio bip bir bka bkb bkc bkk bko bkp bkr boa bob boc boh boi bok boo bop bor bpa bpb bpc bph bpi bpo bpp bpr bra brb brh bri brk bro brp brr c-- caa cab cac cah cai cak cao cap car cba cbb cbc cbh cbi cbk cbo cbp cbr cca ccb ccc cch cci cck cco ccp ccr ch- cha chb chc chh chi chk cho chp chr ci- cia cib cic cih cii cik cio cip cir cka ckb ckc ckh cki cko co- coa cob coc coh coi cok coo cop cor cpa cpb cpc cph cpi cpk cpo cpp cpr cra crb crc crh cri crk cro crp crr h-i haa hab hac hah hai hak hao hap har hba hbb hbc hbh hbi hbk hbo hbp hbr hca hcb hcc hch hci hck hco hcp hcr hha hhb hhc hhh hhi hhk hho hhp hhr hia hib hic hih hii hik hio hip hir hka hkb hkh hki hkk hko hkp hkr hoa hob hoc hoh hoi hok hoo hop hor hpa hpb hpc hph hpi hpk hpo hpp hpr hr- hra hrb hrc hrh hri hrk hro hrp hrr ia- iaa iab iac iah iai iao iap iar iba ibb ibc ibh ibi ibk ibo ibp ibr ica icb icc ich ici ick ico icp icr iha ihb ihc ihh ihi ihk iho ihp ihr iia iib iic iih iii iio iip iir ika ikb ikc iki ikk iko ikr io- ioa iob ioc ioh ioi ioo iop ior ipa ipb ipc ipi ipo ipp ipr ir- ira irb irc iri irk iro irp irr ka- kaa kab kac kah kai kak kao kap kar kba kbb kbc kbh kbi kbk kbo kbp kbr kca kcb kcc kch kci kck kcp kcr kha khh khi khk kho khr kia kib kic kih kii kik kio kip kir kkb kkc kkh kki kkk kkp kkr koa kob koc koh koi kok koo kop kor kpa kpc kph kpi kpk kpo kpp kpr kra krc kri krk kro krp krr o-i oaa oab oac oah oai oak oao oap oar ob- oba obb obc obh obi obk obo obp obr oc- oca ocb occ och oci ock oco ocp ocr oha ohc ohh ohi oho ohp ohr oia oib oic oii oik oio oip oir oka okb okc oki okk oko okp okr oo- ooa oob ooc ooh ooi ook ooo oop oor op- opa opb opc oph opi opk opo opp opr or- ora orb orc orh ori ork oro orp orr p-p paa pab pac pah pai pak pao pap par pba pbb pbc pbi pbk pbo pbp pbr pca pcb pcc pch pci pck pco pcp pcr pha phb phc phi phk pho php phr pia pib pic pih pii pik pio pip pir pka pkb pkc pki pko pkp pkr poa pob poc poh poi pok poo pop por ppa ppb ppc pph ppi ppk ppo ppp ppr pra prb prc prh pri prk pro prp prr ra- raa rab rac rah rai rak rao rap rar rba rbb rbc rbh rbi rbk rbo rbp rbr rca rcb rcc rch rci rco rcp rcr rh- rha rhb rhc rhh rhi rho rhp rhr ria rib ric rih rii rik rio rip rir rkb rkc rkk rko rkp roa rob roc roh roi rok roo rop ror rpa rpb rpc rph rpi rpk rpo rpp rpr rra rrb rrc rrh rri rrk rrp rrr