-ic a-a a-b a-c a-i aaa aab aac aad aai aak aar aay ab- aba abb abc abd abi abk abr aby ac- aca acb acc acd aci ack acr acy ad- ada adb adc add adi adk adr ady ai- aia aib aic aid aii aik air aiy aka akb akc akd aki akk akr ar- ara arb arc ard ari ark arr ary ay- aya ayc ayd ayi ayk ayr baa bab bac bad bai bak bar bay bba bbb bbc bbd bbi bbk bbr bby bca bcb bcc bcd bci bck bcr bcy bda bdb bdc bdd bdi bdk bdr bdy bi- bia bib bic bid bii bik bir biy bka bkb bkc bkk bkr bra brb brd bri brk brr bry by- bya byc byd byi byk byr c-- caa cab cac cad cai cak car cay cba cbb cbc cbd cbi cbk cbr cby cca ccb ccc ccd cci cck ccr cda cdb cdc cdd cdi cdk cdr cdy ci- cia cib cic cid cii cik cir cka ckb ckc ckd cki cky cra crb crc crd cri crk crr cry cya cyb cyc cyd cyk cyr daa dab dac dad dai dak dar day dba dbb dbc dbd dbi dbk dbr dby dca dcb dcc dcd dci dck dcr dda ddb ddc ddd ddi ddk ddr ddy di- dia dib dic did dii dik dir diy dka dkb dkc dki dkk dkr dra drb drc drd dri drk drr dry dy- dya dyb dyc dyd dyk dyr dyy i-d ia- iaa iab iac iad iai iar iba ibb ibc ibd ibi ibk ibr iby ica icb icc icd ici ick icr icy ida idb idc idd idi idk idr idy iia iib iic iid iii iir ika ikb ikc iki ikk ikr ir- ira irb irc ird iri irk irr iry iya iyc iyr iyy ka- kaa kab kac kad kai kak kar kay kba kbb kbc kbd kbi kbk kbr kca kcb kcc kcd kci kck kcr kda kdb kdc kdk kdr kdy kia kib kic kid kii kik kir kkb kkc kki kkk kkr kky kra krc krd kri krk krr kry kya kyc kyd kyr ra- raa rab rac rad rai rak rar ray rba rbb rbc rbd rbi rbk rbr rca rcb rcc rcd rci rcr rda rdb rdc rdd rdi rdr rdy ria rib ric rid rii rik rir riy rkb rkc rkk rky rra rrb rrc rrd rri rrk rrr ry- rya ryc ryd ryk ryr ryy yaa yab yac yad yai yak yar yay ybc ybi ybr yby yca ycc ycd yci ycy yda ydy yid yii yir yka yki ykk yra yrc yyb yyc yyy