-er -ic a-a a-b a-c a-i a-t aaa aab aac aae aag aai aao aar aat aav ab- aba abb abc abe abg abi abo abr abt abv ac- aca acb acc ace acg aci aco acr act acv aea aeb aec aee aeg aei aeo aer aet aev ag- aga agb agc age agg agi ago agr agt agv ai- aia aib aic aie aig aii aio air ait aiv aoa aob aoc aoe aog aoi aoo aor aot aov ar- ara arb arc are arg ari aro arr art arv at- ata atb atc ate atg ati ato atr att atv av- ava avb avc ave avg avi avo avr avt baa bab bac bae bag bai bao bar bat bav bba bbb bbc bbe bbg bbi bbo bbr bbt bca bcb bcc bce bcg bci bco bcr bct bcv be- bea beb bec bee beg bei beo ber bet bev bga bgb bgc bge bgg bgi bgo bgr bgt bgv bi- bia bib bic bie big bii bio bir bit biv boa bob boc boe bog boi boo bor bot bov bra brb bre brg bri bro brr brt brv bta btb btc bte btg bti bto btr btt btv bva bvb bvc bve bvg bvi bvo bvr bvt bvv c-- caa cab cac cae cag cai cao car cat cav cba cbb cbc cbe cbg cbi cbo cbr cbt cbv cca ccb ccc cce ccg cci cco ccr cct ccv ce- cea ceb cec cee ceg cei ceo cer cet cev cga cgb cgc cge cgg cgi cgo cgr cgt cgv ci- cia cib cic cie cig cii cio cir cit civ co- coa cob coc coe cog coi coo cor cot cov cra crb crc cre crg cri cro crr crt crv cta ctb ctc cte ctg cti cto ctr ctt ctv cva cvb cvc cve cvg cvi cvo cvr cvt cvv eaa eab eac eae eag eai eao ear eat eav eba ebb ebc ebe ebg ebi ebo ebr ebt ebv ec- eca ecb ecc ece ecg eci eco ecr ect ecv eea eeb eec eee eeg eeo eer eet eev ega egb egc ege egg egi ego egr egt eia eib eic eie eig eii eio eir eit eiv eo- eoa eob eoc eoe eog eoi eoo eor eot era erb erc ere erg eri ero err ert erv eta etb etc ete etg eti eto etr ett etv eva evb evc eve evg evi evo evr evt evv gaa gab gac gae gag gai gao gar gat gav gba gbc gbe gbg gbi gbo gbr gbt gbv gca gcb gcc gce gcg gci gco gcr gct ge- gea geb gec gee geg gei geo ger get gev gga ggb ggc ggg ggi ggo ggr ggt ggv gia gib gic gie gig gii gio gir git giv goa gob goc goe gog goi goo gor got gov gra grb grc gre grg gri gro grr grt grv gta gtb gtc gte gtg gti gto gtr gtt gtv gva gvb gvc gve gvg gvi gvo gvr gvt i-v ia- iaa iab iac iae iag iai iao iar iat iav iba ibb ibc ibe ibg ibi ibo ibr ibt ibv ica icb icc ice icg ici ico icr ict icv ie- iea iec iee ieg iei ier iet iev iga igb igc ige igg igi igo igr igt iia iib iic iie iii iio iir iit io- ioa iob ioc ioe iog ioi ioo ior iot iov ir- ira irb irc ire irg iri iro irr irt irv ita itb itc ite itg iti ito itt itv iva ivb ivc ive ivg ivi ivo ivr ivt ivv o-i oaa oab oac oae oag oai oao oar oat oav ob- oba obb obc obe obg obi obo obr obt obv oc- oca ocb occ ocg oci oco ocr oct ocv oea oeb oec oee oeg oei oeo oer oet oga ogc oge ogg ogi ogo ogt oia oib oic oie oii oio oir oit oiv oo- ooa oob ooc oog ooi ooo oor oot oov or- ora orb orc ore org ori oro orr ort orv ot- ota otb otc ote otg oti oto otr ott otv ov- ova ovb ovc ove ovi ovo ovv ra- raa rab rac rae rag rai rao rar rat rav rba rbb rbc rbe rbg rbi rbo rbr rbt rca rcb rcc rce rcg rci rco rcr rct rcv re- rea reb rec ree reg rei reo rer ret rev rga rgb rgc rge rgg rgi rgo rgr rgt rgv ria rib ric rie rig rii rio rir rit riv roa rob roc roe rog roi roo ror rot rov rra rrb rrc rrg rri rrr rrt rta rtb rtc rte rtg rti rto rtr rtt rtv rva rvb rvc rve rvg rvi rvo rvr rvt rvv taa tab tac tae tag tai tao tar tat tav tba tbb tbc tbe tbg tbi tbo tbr tbt tbv tca tcb tcc tce tcg tci tco tcr tct tcv te- tea teb tec tee teg tei teo ter tet tev tga tgb tgc tge tgg tgi tgo tgr tgt tgv tia tib tic tie tig tii tio tir tit tiv to- toa tob toc toe tog toi too tor tot tov tra trb trc tre trg tri tro trr trt trv tta ttb ttc tte ttg tti tto ttr ttt ttv tva tvb tvc tve tvg tvi tvo tvr tvt v-a v-e vaa vab vac vae vag vai vao var vat vav vba vbc vbg vbi vbo vbr vbv vca vcc vce vci vco vcr vct vea veb vec vee veg vei veo ver vet vga vgc vgg vgo vgr vgt vi- via vib vic vie vig vii vio vir vit viv voa vob voc voe vog voi voo vor vot vov vra vrb vrc vre vrg vri vrr vrt vta vtb vtc vte vtg vti vto vtr vtt vtv vva vvb vvc vvg vvi vvo vvr vvt vvv

-vac a-be a-ii