-al -er a-a a-b aaa aab aad aae aaf aal aam aar ab- aba abb abd abe abf abl abm abr ad- ada adb add ade adf adl adm adr aea aeb aed aee aef ael aem aer af- afa afb afd afe aff afl afm afr al- ala alb ald ale alf all alm alr ama amb amd ame amf aml amm amr ar- ara arb ard are arf arl arm arr baa bab bad bae baf bal bam bar bba bbb bbd bbe bbf bbl bbm bbr bda bdb bdd bde bdf bdl bdm bdr be- bea beb bed bee bef bel bem ber bfa bfb bfd bfe bff bfl bfm bfr bla blb bld ble blf bll blm blr bma bmb bmd bme bmf bml bmm bmr bra brb brd bre brf brl brm brr daa dab dad dae daf dal dam dar dba dbb dbd dbe dbf dbl dbm dbr dda ddb ddd dde ddf ddl ddm ddr de- dea deb ded dee def del dem der dfa dfb dfd dfe dff dfl dfm dfr dl- dla dlb dld dle dlf dll dlm dlr dma dmb dmd dme dmf dml dmm dmr dra drb drd dre drl drm drr eaa eab ead eae eaf eal eam ear eba ebb ebd ebe ebf ebl ebm ebr ed- eda edb edd ede edf edl edm edr eea eeb eed eee eef eel eem eer ef- efa efb efd efe eff efl efm efr ela elb eld ele elf ell elm elr em- ema emb emd eme emf eml emm emr era erb erd ere erf erl erm err faa fab fad fae faf fal fam far fba fbb fbd fbe fbf fbl fbm fbr fda fdb fdd fde fdf fdl fdm fdr fea feb fed fee fef fel fem fer ffa ffd ffe fff ffl ffm ffr fla flb fld fle flf fll flm flr fma fmb fmd fme fmf fml fmm fmr fra frb frd fre frf frl frm frr la- laa lab lad lae laf lal lam lar lba lbb lbd lbe lbf lbl lbm lbr lda ldb ldd lde ldf ldl ldm ldr lea leb led lee lef lel lem ler lfa lfb lfd lfe lff lfl lfm lfr lla llb lld lle llf lll llm llr lma lmb lmd lme lmf lml lmm lmr lra lrb lrd lrf lrm lrr m-f m-r maa mab mad mae maf mal mam mar mba mbb mbd mbe mbf mbl mbm mbr mda mdb mdd mde mdf mdl mdm mdr mea meb med mee mef mel mem mer mfa mfb mfd mfe mff mfl mfm mfr mla mlb mld mle mlf mll mlm mlr mma mmb mmd mme mmf mml mmm mmr mra mrb mrd mre mrf mrl mrm mrr ra- raa rab rad rae raf ral ram rar rba rbb rbd rbe rbf rbl rbm rbr rda rdb rdd rde rdf rdl rdm rdr re- rea reb red ree ref rel rem rer rfa rfb rfd rfe rff rfl rfm rfr rla rld rle rlf rll rlm rlr rma rmb rmd rme rmf rml rmm rmr rra rrb rrd rrf rrl rrm rrr