-al -er a-a a-b a-t aaa aab aae aak aal aam aar aat ab- aba abb abe abk abl abm abr abt aea aeb aee aek ael aem aer aet aka akb ake akk akl akm akr al- ala alb ale alk all alm alr alt ama amb ame amk aml amm amr amt ar- ara arb are ark arl arm arr art at- ata atb ate atl atm atr att baa bab bae bak bal bam bar bat bba bbb bbe bbk bbl bbm bbr bbt be- bea beb bee bek bel bem ber bet bka bkb bke bkk bkl bkm bkr bkt bla blb ble blk bll blm blr blt bma bmb bme bmk bml bmm bmr bmt bra brb bre brk brl brm brr brt bta btb bte btk btl btm btr btt eaa eab eae eak eal eam ear eat eba ebb ebe ebk ebl ebm ebr ebt eea eeb eee eek eel eem eer eet eka ekb eke ekl ekr ekt ela elb ele elk ell elm elr elt em- ema emb eme emk eml emm emr emt era erb ere erk erl erm err ert eta etb ete etk etl etm etr ett k-t ka- kaa kab kae kak kal kam kar kat kba kbb kbe kbk kbl kbm kbr ke- kea keb kee kek kel kem ker ket kkb kke kkk kkl kkm kkr kkt kl- kla klb klm klr klt kma kmb kme kmk kml kmm kmt kra krk krl krr krt kta ktb kte ktk ktl ktm ktr ktt la- laa lab lae lak lal lam lar lat lba lbb lbe lbk lbl lbm lbr lbt lea leb lee lek lel lem ler let lka lkb lkl lkr lkt lla llb lle llk lll llm llr llt lma lmb lme lmk lml lmm lmr lmt lra lrb lrk lrm lrr lrt lta ltb lte ltk ltl ltm ltr ltt m-r maa mab mae mak mal mam mar mat mba mbb mbe mbk mbl mbm mbr mbt mea meb mee mek mel mem mer met mka mkb mke mkk mkl mkm mkr mkt mla mlb mle mlk mll mlm mlr mlt mma mmb mme mmk mml mmm mmr mmt mra mrb mre mrk mrl mrm mrr mrt mta mtb mte mtk mtl mtm mtr mtt ra- raa rab rae rak ral ram rar rat rba rbb rbe rbk rbl rbm rbr rbt re- rea reb ree rek rel rem rer ret rkb rke rkk rkm rkt rla rle rll rlm rlr rlt rma rmb rme rml rmm rmr rmt rra rrb rrk rrl rrm rrr rrt rta rtb rte rtk rtl rtm rtr rtt taa tab tae tak tal tam tar tat tba tbb tbe tbk tbl tbm tbr tbt te- tea teb tee tek tel tem ter tet tka tkb tke tkk tkl tkm tkr tkt tla tle tlk tll tlm tlr tlt tma tmb tme tmk tml tmm tmr tmt tra trb tre trk trl trm trr trt tta ttb tte ttk ttl ttm ttr ttt