-ic a-a a-b a-c a-i aaa aab aac aae aag aai aan aav ab- aba abb abc abe abg abi abn abv ac- aca acb acc ace acg aci acn acv aea aeb aec aee aeg aei aen aev ag- aga agb agc age agg agi agn agv ai- aia aib aic aie aig aii ain aiv an- ana anb anc ane ang ani ann anv av- ava avb avc ave avg avi avn baa bab bac bae bag bai ban bav bba bbb bbc bbe bbg bbi bbn bca bcb bcc bce bcg bci bcn bcv be- bea beb bec bee beg bei ben bev bga bgb bgc bge bgg bgi bgn bgv bi- bia bib bic bie big bii bin biv bna bnb bnc bne bng bni bnn bnv bva bvb bvc bve bvg bvi bvn bvv c-- caa cab cac cae cag cai can cav cba cbb cbc cbe cbg cbi cbn cbv cca ccb ccc cce ccg cci ccn ccv ce- cea ceb cec cee ceg cei cen cev cga cgb cgc cge cgg cgi cgn cgv ci- cia cib cic cie cig cii cin civ cn- cna cnb cnc cne cng cni cnn cnv cva cvb cvc cve cvg cvi cvn cvv eaa eab eac eae eag eai ean eav eba ebb ebc ebe ebg ebi ebn ebv ec- eca ecb ecc ece ecg eci ecn ecv eea eeb eec eee eeg een eev ega egb egc ege egg egi egn eia eib eic eie eig eii ein eiv en- ena enb enc ene eng eni enn env eva evb evc eve evg evi evn evv gaa gab gac gae gag gai gan gav gba gbc gbe gbg gbi gbn gbv gca gcb gcc gce gcg gci gcn ge- gea geb gec gee geg gei gen gev gga ggb ggc ggg ggi ggn ggv gia gib gic gie gig gii gin giv gna gnb gnc gne gni gnn gnv gva gvb gvc gve gvg gvi gvn i-v ia- iaa iab iac iae iag iai ian iav iba ibb ibc ibe ibg ibi ibn ibv ica icb icc ice icg ici icn icv ie- iea iec iee ieg iei ien iev iga igb igc ige igg igi ign iia iib iic iie iii iin in- ina inb inc ine ing ini inn inv iva ivb ivc ive ivg ivi ivv n-i naa nab nac nae nag nai nan nav nba nbb nbc nbe nbg nbi nbn nbv nca ncb ncc nce ncg nci ncn ncv ne- nea neb nec nee neg nei nen nev nga ngb ngc nge ngg ngi ngn nia nib nic nie nig nii nin niv nna nnb nnc nne nng nni nnn nnv nva nvb nvc nve nvg nvi nvn nvv v-a v-e vaa vab vac vae vag vai van vav vba vbc vbg vbi vbv vca vcc vce vci vcn vea veb vec vee veg vei ven vga vgc vgg vgn vi- via vib vic vie vig vii vin viv vn- vna vng vni vnv vva vvb vvc vvg vvi vvv