-al -er a-a a-b a-c a-t aaa aab aac aae aal aam aar aat ab- aba abb abc abe abl abm abr abt ac- aca acb acc ace acl acm acr act aea aeb aec aee ael aem aer aet al- ala alb alc ale all alm alr alt ama amb amc ame aml amm amr amt ar- ara arb arc are arl arm arr art at- ata atb atc ate atl atm atr att baa bab bac bae bal bam bar bat bba bbb bbc bbe bbl bbm bbr bbt bca bcb bcc bce bcl bcm bcr bct be- bea beb bec bee bel bem ber bet bla blb blc ble bll blm blr blt bma bmb bmc bme bml bmm bmr bmt bra brb bre brl brm brr brt bta btb btc bte btl btm btr btt c-- caa cab cac cae cal cam car cat cba cbb cbc cbe cbl cbm cbr cbt cca ccb ccc cce ccl ccm ccr cct ce- cea ceb cec cee cel cem cer cet cl- cla clb clc cle cll clm clr clt cma cmb cmc cme cml cmm cmr cmt cra crb crc cre crl crm crr crt cta ctb ctc cte ctl ctm ctr ctt eaa eab eac eae eal eam ear eat eba ebb ebc ebe ebl ebm ebr ebt ec- eca ecb ecc ece ecl ecm ecr ect eea eeb eec eee eel eem eer eet ela elb elc ele ell elm elr elt em- ema emb emc eme eml emm emr emt era erb erc ere erl erm err ert eta etb etc ete etl etm etr ett la- laa lab lac lae lal lam lar lat lba lbb lbc lbe lbl lbm lbr lbt lca lcb lcc lce lcl lcm lcr lct lea leb lec lee lel lem ler let lla llb llc lle lll llm llr llt lma lmb lmc lme lml lmm lmr lmt lra lrb lrc lrm lrr lrt lta ltb ltc lte ltl ltm ltr ltt m-r maa mab mac mae mal mam mar mat mba mbb mbc mbe mbl mbm mbr mbt mc- mca mcb mcc mce mcl mcm mcr mct mea meb mec mee mel mem mer met mla mlb mlc mle mll mlm mlr mlt mma mmb mmc mme mml mmm mmr mmt mra mrb mrc mre mrl mrm mrr mrt mta mtb mtc mte mtl mtm mtr mtt ra- raa rab rac rae ral ram rar rat rba rbb rbc rbe rbl rbm rbr rbt rca rcb rcc rce rcl rcm rcr rct re- rea reb rec ree rel rem rer ret rla rlc rle rll rlm rlr rlt rma rmb rmc rme rml rmm rmr rmt rra rrb rrc rrl rrm rrr rrt rta rtb rtc rte rtl rtm rtr rtt taa tab tac tae tal tam tar tat tba tbb tbc tbe tbl tbm tbr tbt tca tcb tcc tce tcl tcm tcr tct te- tea teb tec tee tel tem ter tet tla tlc tle tll tlm tlr tlt tma tmb tmc tme tml tmm tmr tmt tra trb trc tre trl trm trr trt tta ttb ttc tte ttl ttm ttr ttt