-al -er a-a a-b a-t aaa aab aae aal aar aat aau aax ab- aba abb abe abl abr abt abu abx aea aeb aee ael aer aet aeu aex al- ala alb ale all alr alt alu alx ar- ara arb are arl arr art aru arx at- ata atb ate atl atr att atu atx au- aua aub aue aul aur aut aux ax- axa axe axl axr axt axx b-u baa bab bae bal bar bat bau bax bba bbb bbe bbl bbr bbt bbu bbx be- bea beb bee bel ber bet beu bex bla blb ble bll blr blt blu blx bra brb bre brl brr brt bru brx bta btb bte btl btr btt btu btx bua bub bue bul bur but buu bux bxb bxl bxx eaa eab eae eal ear eat eau eax eba ebb ebe ebl ebr ebt ebu ebx eea eeb eee eel eer eet eex ela elb ele ell elr elt elu elx era erb ere erl err ert eru eta etb ete etl etr ett etu etx eu- eua eub eue eul eur eut eux ex- exa exe exl exr ext exu exx la- laa lab lae lal lar lat lau lax lba lbb lbe lbl lbr lbt lbu lbx lea leb lee lel ler let leu lex lla llb lle lll llr llt llu lra lrb lrr lrt lru lta ltb lte ltl ltr ltt ltu ltx lua lub lue lul lur lut luu lux lxr lxx ra- raa rab rae ral rar rat rau rax rba rbb rbe rbl rbr rbt rbu rbx re- rea reb ree rel rer ret reu rex rla rle rll rlr rlt rlu rra rrb rrl rrr rrt rru rta rtb rte rtl rtr rtt rtu rtx rua rub rue rur rut ruu rux rxr t-x taa tab tae tal tar tat tau tax tba tbb tbe tbl tbr tbt tbu te- tea teb tee tel ter tet teu tex tla tle tll tlr tlt tlu tlx tra trb tre trl trr trt tru trx tta ttb tte ttl ttr ttt ttu ttx tua tub tue tul tur tut tuu tux txe txl txt txu ua- uaa uab uae ual uar uat uau uba ubb ube ubl ubr ubt ubu ubx uea ueb uee uel uer uet ula ulb ule ull ulr ult ulu ur- ura urb ure url urr urt uru urx uta utb ute utl utr utt utu utx uua uue uur uut uuu uxb uxr uxt uxu xaa xal xar xat xau xbe xbl xbr xbx xee xel xer xet xeu xex xla xlb xlr xlt xrt xrx xtr xtx xue xul xxl xxx