a-a a-b a-i aaa aab aai aak aam aar aas ab- aba abb abi abk abm abr abs ai- aia aib aii aik aim air ais aka akb aki akk akm akr aks ama amb ami amk amm amr ams ar- ara arb ari ark arm arr ars as- asa asb asi ask asm asr ass baa bab bai bak bam bar bas bba bbb bbi bbk bbm bbr bbs bi- bia bib bii bik bim bir bis bka bkb bkk bkm bkr bks bma bmb bmi bmk bmm bmr bms bra brb bri brk brm brr brs bsa bsb bsi bsk bsm bsr bss ia- iaa iab iai iam iar ias iba ibb ibi ibk ibm ibr ibs iia iib iii iim iir iis ika ikb iki ikk ikr iks im- ima imb imi imm ims ir- ira irb iri irk irm irr irs is- isa isb isi isk ism isr iss ka- kaa kab kai kak kam kar kas kba kbb kbi kbk kbm kbr kbs kia kib kii kik kim kir kis kkb kki kkk kkm kkr kks kma kmb kmi kmk kmm kms kra kri krk krr krs ksa ksb ksi ksk ksm ksr kss m-r maa mab mai mak mam mar mas mba mbb mbi mbk mbm mbr mbs mi- mia mib mii mik mim mir mis mka mkb mkk mkm mkr mks mma mmb mmi mmk mmm mmr mms mra mrb mri mrk mrm mrr mrs msa msb msi msk msm msr mss ra- raa rab rai rak ram rar ras rba rbb rbi rbk rbm rbr rbs ria rib rii rik rim rir ris rkb rkk rkm rks rma rmb rmi rmm rmr rms rra rrb rri rrk rrm rrr rrs rsa rsb rsi rsk rsm rsr rss saa sab sai sak sam sar sas sba sbb sbi sbk sbm sbr sbs sia sib sii sik sim sir sis sk- ska skb ski skk skm skr sks sma smb smi smk smm smr sms sr- sra srb sri srk srm srr srs ss- ssa ssb ssi ssk ssm ssr sss