-ic a-a a-b a-c a-i aaa aab aac aae aag aai aak aav ab- aba abb abc abe abg abi abk abv ac- aca acb acc ace acg aci ack acv aea aeb aec aee aeg aei aek aev ag- aga agb agc age agg agi agk agv ai- aia aib aic aie aig aii aik aiv aka akb akc ake akg aki akk akv av- ava avb avc ave avg avi avk baa bab bac bae bag bai bak bav bba bbb bbc bbe bbg bbi bbk bca bcb bcc bce bcg bci bck bcv be- bea beb bec bee beg bei bek bev bga bgb bgc bge bgg bgi bgk bgv bi- bia bib bic bie big bii bik biv bka bkb bkc bke bkg bkk bkv bva bvb bvc bve bvg bvi bvk bvv c-- caa cab cac cae cag cai cak cav cba cbb cbc cbe cbg cbi cbk cbv cca ccb ccc cce ccg cci cck ccv ce- cea ceb cec cee ceg cei cek cev cga cgb cgc cge cgg cgi cgv ci- cia cib cic cie cig cii cik civ cka ckb ckc cki cva cvb cvc cve cvg cvi cvk cvv eaa eab eac eae eag eai eak eav eba ebb ebc ebe ebg ebi ebk ebv ec- eca ecb ecc ece ecg eci eck ecv eea eeb eec eee eeg eek eev ega egb egc ege egg egi eia eib eic eie eig eii eik eiv eka ekb ekc eke ekg eki ekv eva evb evc eve evg evi evv gaa gab gac gae gag gai gak gav gba gbc gbe gbg gbi gbk gbv gca gcb gcc gce gcg gci gck ge- gea geb gec gee geg gei gek gev gga ggb ggc ggg ggi ggv gia gib gic gie gig gii gik giv gka gkb gva gvb gvc gve gvg gvi gvk i-v ia- iaa iab iac iae iag iai iav iba ibb ibc ibe ibg ibi ibk ibv ica icb icc ice icg ici ick icv ie- iea iec iee ieg iei iek iev iga igb igc ige igg igi igk iia iib iic iie iii ika ikb ikc ike iki ikk ikv iva ivb ivc ive ivg ivi ivv ka- kaa kab kac kae kag kai kak kav kba kbb kbc kbe kbi kbk kca kcb kcc kce kcg kci kck ke- kea keb kec kee keg kei kek kev kga kgb kgc kgi kgv kia kib kic kie kig kii kik kiv kkb kkc kke kki kkk kkv kva kvb kvi kvk kvv v-a v-e vaa vab vac vae vag vai vak vav vba vbc vbg vbi vbk vbv vca vcc vce vci vea veb vec vee veg vei vek vga vgc vgg vi- via vib vic vie vig vii vik viv vka vkb vkg vva vvb vvc vvg vvi vvv