a-a a-b a-i aaa aab aai aak aam aap aar ab- aba abb abi abk abm abp abr ai- aia aib aii aik aim aip air aka akb aki akk akm akp akr ama amb ami amk amm amp amr ap- apa apb api apk apm app apr ar- ara arb ari ark arm arp arr b-p baa bab bai bak bam bap bar bba bbb bbi bbk bbm bbp bbr bi- bia bib bii bik bim bip bir bka bkb bkk bkm bkp bkr bma bmb bmi bmk bmm bmp bmr bpa bpb bpi bpm bpp bpr bra brb bri brk brm brp brr ia- iaa iab iai iam iap iar iba ibb ibi ibk ibm ibp ibr iia iib iii iim iip iir ika ikb iki ikk ikr im- ima imb imi imm imp ipa ipb ipi ipm ipp ipr ir- ira irb iri irk irm irp irr ka- kaa kab kai kak kam kap kar kba kbb kbi kbk kbm kbp kbr kia kib kii kik kim kip kir kkb kki kkk kkm kkp kkr kma kmb kmi kmk kmm kmp kpa kpi kpk kpm kpp kpr kra kri krk krp krr m-r maa mab mai mak mam map mar mba mbb mbi mbk mbm mbp mbr mi- mia mib mii mik mim mip mir mka mkb mkk mkm mkp mkr mma mmb mmi mmk mmm mmp mmr mpa mpb mpi mpk mpm mpp mpr mra mrb mri mrk mrm mrp mrr p-p paa pab pai pak pam pap par pba pbb pbi pbk pbm pbp pbr pia pib pii pik pim pip pir pka pkb pki pkm pkp pkr pma pmb pmi pmk pmm pmp pmr ppa ppb ppi ppk ppm ppp ppr pra prb pri prk prm prp prr ra- raa rab rai rak ram rap rar rba rbb rbi rbk rbm rbp rbr ria rib rii rik rim rip rir rkb rkk rkm rkp rma rmb rmi rmm rmp rmr rpa rpb rpi rpk rpm rpp rpr rra rrb rri rrk rrm rrp rrr