-ic a-a a-b a-c a-i aaa aab aac aai aak aam aar ab- aba abb abc abi abk abm abr ac- aca acb acc aci ack acm acr ai- aia aib aic aii aik aim air aka akb akc aki akk akm akr ama amb amc ami amk amm amr ar- ara arb arc ari ark arm arr baa bab bac bai bak bam bar bba bbb bbc bbi bbk bbm bbr bca bcb bcc bci bck bcm bcr bi- bia bib bic bii bik bim bir bka bkb bkc bkk bkm bkr bma bmb bmc bmi bmk bmm bmr bra brb bri brk brm brr c-- caa cab cac cai cak cam car cba cbb cbc cbi cbk cbm cbr cca ccb ccc cci cck ccm ccr ci- cia cib cic cii cik cim cir cka ckb ckc cki ckm cma cmb cmc cmi cmk cmm cmr cra crb crc cri crk crm crr ia- iaa iab iac iai iam iar iba ibb ibc ibi ibk ibm ibr ica icb icc ici ick icm icr iia iib iic iii iim iir ika ikb ikc iki ikk ikr im- ima imb imc imi imm ir- ira irb irc iri irk irm irr ka- kaa kab kac kai kak kam kar kba kbb kbc kbi kbk kbm kbr kca kcb kcc kci kck kcm kcr kia kib kic kii kik kim kir kkb kkc kki kkk kkm kkr kma kmb kmc kmi kmk kmm kra krc kri krk krr m-r maa mab mac mai mak mam mar mba mbb mbc mbi mbk mbm mbr mc- mca mcb mcc mci mck mcm mcr mi- mia mib mic mii mik mim mir mka mkb mkc mkk mkm mkr mma mmb mmc mmi mmk mmm mmr mra mrb mrc mri mrk mrm mrr ra- raa rab rac rai rak ram rar rba rbb rbc rbi rbk rbm rbr rca rcb rcc rci rcm rcr ria rib ric rii rik rim rir rkb rkc rkk rkm rma rmb rmc rmi rmm rmr rra rrb rrc rri rrk rrm rrr