-al -er -ic a-a a-b a-c a-i a-t aaa aab aac aae aai aak aal aar aat aav ab- aba abb abc abe abi abk abl abr abt abv ac- aca acb acc ace aci ack acl acr act acv aea aeb aec aee aei aek ael aer aet aev ai- aia aib aic aie aii aik ail air ait aiv aka akb akc ake aki akk akl akr akv al- ala alb alc ale ali alk all alr alt alv ar- ara arb arc are ari ark arl arr art arv at- ata atb atc ate ati atl atr att atv av- ava avb avc ave avi avk avl avr avt baa bab bac bae bai bak bal bar bat bav bba bbb bbc bbe bbi bbk bbl bbr bbt bca bcb bcc bce bci bck bcl bcr bct bcv be- bea beb bec bee bei bek bel ber bet bev bi- bia bib bic bie bii bik bil bir bit biv bka bkb bkc bke bkk bkl bkr bkt bkv bla blb blc ble bli blk bll blr blt blv bra brb bre bri brk brl brr brt brv bta btb btc bte bti btk btl btr btt btv bva bvb bvc bve bvi bvk bvl bvr bvt bvv c-- caa cab cac cae cai cak cal car cat cav cba cbb cbc cbe cbi cbk cbl cbr cbt cbv cca ccb ccc cce cci cck ccl ccr cct ccv ce- cea ceb cec cee cei cek cel cer cet cev ci- cia cib cic cie cii cik cil cir cit civ cka ckb ckc cki ckt cl- cla clb clc cle cli clk cll clr clt clv cra crb crc cre cri crk crl crr crt crv cta ctb ctc cte cti ctk ctl ctr ctt ctv cva cvb cvc cve cvi cvk cvl cvr cvt cvv eaa eab eac eae eai eak eal ear eat eav eba ebb ebc ebe ebi ebk ebl ebr ebt ebv ec- eca ecb ecc ece eci eck ecl ecr ect ecv eea eeb eec eee eek eel eer eet eev eia eib eic eie eii eik eil eir eit eiv eka ekb ekc eke eki ekl ekr ekt ekv ela elb elc ele eli elk ell elr elt elv era erb erc ere eri erk erl err ert erv eta etb etc ete eti etk etl etr ett etv eva evb evc eve evi evl evr evt evv i-v ia- iaa iab iac iae iai ial iar iat iav iba ibb ibc ibe ibi ibk ibl ibr ibt ibv ica icb icc ice ici ick icl icr ict icv ie- iea iec iee iei iek iel ier iet iev iia iib iic iie iii iil iir iit ika ikb ikc ike iki ikk ikl ikr ikt ikv il- ila ilb ilc ile ili ilk ill ilr ilt ilv ir- ira irb irc ire iri irk irl irr irt irv ita itb itc ite iti itk itl itt itv iva ivb ivc ive ivi ivl ivr ivt ivv k-t ka- kaa kab kac kae kai kak kal kar kat kav kba kbb kbc kbe kbi kbk kbl kbr kca kcb kcc kce kci kck kcl kcr kct ke- kea keb kec kee kei kek kel ker ket kev kia kib kic kie kii kik kil kir kit kiv kkb kkc kke kki kkk kkl kkr kkt kkv kl- kla klb klc kli klr klt klv kra krc kri krk krl krr krt krv kta ktb ktc kte ktk ktl ktr ktt ktv kva kvb kvi kvk kvr kvv la- laa lab lac lae lai lak lal lar lat lav lba lbb lbc lbe lbi lbk lbl lbr lbt lbv lca lcb lcc lce lci lck lcl lcr lct lcv lea leb lec lee lei lek lel ler let lev lia lib lic lie lii lik lil lir lit liv lka lkb lkl lkr lkt lla llb llc lle lli llk lll llr llt llv lra lrb lrc lri lrk lrr lrt lrv lta ltb ltc lte lti ltk ltl ltr ltt ltv lva lvb lvc lve lvi lvl lvr lvt lvv ra- raa rab rac rae rai rak ral rar rat rav rba rbb rbc rbe rbi rbk rbl rbr rbt rca rcb rcc rce rci rcl rcr rct rcv re- rea reb rec ree rei rek rel rer ret rev ria rib ric rie rii rik ril rir rit riv rkb rkc rke rkk rkt rkv rla rlc rle rli rll rlr rlt rra rrb rrc rri rrk rrl rrr rrt rta rtb rtc rte rti rtk rtl rtr rtt rtv rva rvb rvc rve rvi rvl rvr rvt rvv taa tab tac tae tai tak tal tar tat tav tba tbb tbc tbe tbi tbk tbl tbr tbt tbv tca tcb tcc tce tci tck tcl tcr tct tcv te- tea teb tec tee tei tek tel ter tet tev tia tib tic tie tii tik til tir tit tiv tka tkb tkc tke tkk tkl tkr tkt tla tlc tle tli tlk tll tlr tlt tlv tra trb trc tre tri trk trl trr trt trv tta ttb ttc tte tti ttk ttl ttr ttt ttv tva tvb tvc tve tvi tvk tvl tvr tvt v-a v-e vaa vab vac vae vai vak val var vat vav vba vbc vbi vbk vbl vbr vbv vca vcc vce vci vcl vcr vct vea veb vec vee vei vek vel ver vet vi- via vib vic vie vii vik vil vir vit viv vka vkb vkt vl- vla vlb vlc vle vlk vll vlt vlv vra vrb vrc vre vri vrk vrr vrt vta vtb vtc vte vti vtk vtl vtr vtt vtv vva vvb vvc vvi vvr vvt vvv