-ic a-a a-b a-c a-i aaa aab aac aai aas aav ab- aba abb abc abi abs abv ac- aca acb acc aci acs acv ai- aia aib aic aii ais aiv as- asa asb asc asi ass asv av- ava avb avc avi avs baa bab bac bai bas bav bba bbb bbc bbi bbs bca bcb bcc bci bcs bcv bi- bia bib bic bii bis biv bsa bsb bsc bsi bss bsv bva bvb bvc bvi bvs bvv c-- caa cab cac cai cas cav cba cbb cbc cbi cbs cbv cca ccb ccc cci ccs ccv ci- cia cib cic cii cis civ csa csb csc csi css csv cva cvb cvc cvi cvs cvv i-v ia- iaa iab iac iai ias iav iba ibb ibc ibi ibs ibv ica icb icc ici ics icv iia iib iic iii iis is- isa isb isc isi iss isv iva ivb ivc ivi ivs ivv saa sab sac sai sas sav sba sbb sbc sbi sbs sbv sca scb scc sci scs scv sia sib sic sii sis siv ss- ssa ssb ssc ssi sss ssv sva svb svc svi svs svv v-a vaa vab vac vai vas vav vba vbc vbi vbs vbv vca vcc vci vcs vi- via vib vic vii vis viv vsa vsb vsc vsi vss vsv vva vvb vvc vvi vvs vvv