-ic a-a a-b a-c a-i aaa aab aac aai aar aav ab- aba abb abc abi abr abv ac- aca acb acc aci acr acv ai- aia aib aic aii air aiv ar- ara arb arc ari arr arv av- ava avb avc avi avr baa bab bac bai bar bav bba bbb bbc bbi bbr bca bcb bcc bci bcr bcv bi- bia bib bic bii bir biv bra brb bri brr brv bva bvb bvc bvi bvr bvv c-- caa cab cac cai car cav cba cbb cbc cbi cbr cbv cca ccb ccc cci ccr ccv ci- cia cib cic cii cir civ cra crb crc cri crr crv cva cvb cvc cvi cvr cvv i-v ia- iaa iab iac iai iar iav iba ibb ibc ibi ibr ibv ica icb icc ici icr icv iia iib iic iii iir ir- ira irb irc iri irr irv iva ivb ivc ivi ivr ivv ra- raa rab rac rai rar rav rba rbb rbc rbi rbr rca rcb rcc rci rcr rcv ria rib ric rii rir riv rra rrb rrc rri rrr rva rvb rvc rvi rvr rvv v-a vaa vab vac vai var vav vba vbc vbi vbr vbv vca vcc vci vcr vi- via vib vic vii vir viv vra vrb vrc vri vrr vva vvb vvc vvi vvr vvv