-al -er a-a a-b a-c a-t aaa aab aac aae aal aap aar aat ab- aba abb abc abe abl abp abr abt ac- aca acb acc ace acl acp acr act aea aeb aec aee ael aep aer aet al- ala alb alc ale all alp alr alt ap- apa apb apc ape apl app apr apt ar- ara arb arc are arl arp arr art at- ata atb atc ate atl atp atr att b-p baa bab bac bae bal bap bar bat bba bbb bbc bbe bbl bbp bbr bbt bca bcb bcc bce bcl bcp bcr bct be- bea beb bec bee bel bep ber bet bla blb blc ble bll blp blr blt bpa bpb bpc bpe bpl bpp bpr bpt bra brb bre brl brp brr brt bta btb btc bte btl btp btr btt c-- caa cab cac cae cal cap car cat cba cbb cbc cbe cbl cbp cbr cbt cca ccb ccc cce ccl ccp ccr cct ce- cea ceb cec cee cel cep cer cet cl- cla clb clc cle cll clp clr clt cpa cpb cpc cpe cpl cpp cpr cpt cra crb crc cre crl crp crr crt cta ctb ctc cte ctl ctp ctr ctt eaa eab eac eae eal eap ear eat eba ebb ebc ebe ebl ebp ebr ebt ec- eca ecb ecc ece ecl ecr ect eea eeb eec eee eel eep eer eet ela elb elc ele ell elp elr elt ep- epa epb epc epe epl epp epr ept era erb erc ere erl erp err ert eta etb etc ete etl etp etr ett l-p la- laa lab lac lae lal lap lar lat lba lbb lbc lbe lbl lbp lbr lbt lca lcb lcc lce lcl lcp lcr lct lea leb lec lee lel lep ler let lla llb llc lle lll llp llr llt lpa lpb lpc lpe lpl lpp lpr lpt lra lrb lrc lrp lrr lrt lta ltb ltc lte ltl ltp ltr ltt p-p paa pab pac pae pal pap par pat pba pbb pbc pbe pbl pbp pbr pbt pca pcb pcc pce pcl pcp pcr pct pea peb pec pee pel pep per pet pla plb plc ple pll plp plr plt ppa ppb ppc ppe ppl ppp ppr ppt pra prb prc pre prl prp prr prt pt- pta ptb ptc pte ptl ptp ptr ptt ra- raa rab rac rae ral rap rar rat rba rbb rbc rbe rbl rbp rbr rbt rca rcb rcc rce rcl rcp rcr rct re- rea reb rec ree rel rep rer ret rla rlc rle rll rlp rlr rlt rpa rpb rpc rpe rpl rpp rpr rpt rra rrb rrc rrl rrp rrr rrt rta rtb rtc rte rtl rtp rtr rtt taa tab tac tae tal tap tar tat tba tbb tbc tbe tbl tbp tbr tbt tca tcb tcc tce tcl tcp tcr tct te- tea teb tec tee tel tep ter tet tla tlc tle tll tlp tlr tlt tpa tpb tpc tpe tpl tpp tpr tpt tra trb trc tre trl trp trr trt tta ttb ttc tte ttl ttp ttr ttt