-al -er a-a a-b a-t aaa aab aae aal aar aat aav aax ab- aba abb abe abl abr abt abv abx aea aeb aee ael aer aet aev aex al- ala alb ale all alr alt alv alx ar- ara arb are arl arr art arv arx at- ata atb ate atl atr att atv atx av- ava avb ave avl avr avt avx ax- axa axe axl axr axt axv axx baa bab bae bal bar bat bav bax bba bbb bbe bbl bbr bbt bbx be- bea beb bee bel ber bet bev bex bla blb ble bll blr blt blv blx bra brb bre brl brr brt brv brx bta btb bte btl btr btt btv btx bva bvb bve bvl bvr bvt bvv bxb bxl bxx eaa eab eae eal ear eat eav eax eba ebb ebe ebl ebr ebt ebv ebx eea eeb eee eel eer eet eev eex ela elb ele ell elr elt elv elx era erb ere erl err ert erv eta etb ete etl etr ett etv etx eva evb eve evl evr evt evv ex- exa exe exl exr ext exx la- laa lab lae lal lar lat lav lax lba lbb lbe lbl lbr lbt lbv lbx lea leb lee lel ler let lev lex lla llb lle lll llr llt llv lra lrb lrr lrt lrv lta ltb lte ltl ltr ltt ltv ltx lva lvb lve lvl lvr lvt lvv lvx lxr lxv lxx ra- raa rab rae ral rar rat rav rax rba rbb rbe rbl rbr rbt rbx re- rea reb ree rel rer ret rev rex rla rle rll rlr rlt rra rrb rrl rrr rrt rta rtb rte rtl rtr rtt rtv rtx rva rvb rve rvl rvr rvt rvv rxr t-x taa tab tae tal tar tat tav tax tba tbb tbe tbl tbr tbt tbv te- tea teb tee tel ter tet tev tex tla tle tll tlr tlt tlv tlx tra trb tre trl trr trt trv trx tta ttb tte ttl ttr ttt ttv ttx tva tvb tve tvl tvr tvt tvx txe txl txt v-a v-e vaa vab vae val var vat vav vax vba vbl vbr vbv vea veb vee vel ver vet vex vl- vla vlb vle vll vlt vlv vra vrb vre vrr vrt vta vtb vte vtl vtr vtt vtv vtx vva vvb vvr vvt vvv vxa vxl vxr vxv xaa xal xar xat xav xbe xbl xbr xbx xee xel xer xet xev xex xla xlb xlr xlt xlv xrt xrx xtr xtv xtx xvl xvt xxl xxv xxx