-al -er -ol a-a a-b a-t aaa aab aae aal aao aap aar aat ab- aba abb abe abl abo abp abr abt aea aeb aee ael aeo aep aer aet al- ala alb ale all alo alp alr alt aoa aob aoe aol aoo aop aor aot ap- apa apb ape apl apo app apr apt ar- ara arb are arl aro arp arr art at- ata atb ate atl ato atp atr att b-p baa bab bae bal bao bap bar bat bba bbb bbe bbl bbo bbp bbr bbt be- bea beb bee bel beo bep ber bet bla blb ble bll blo blp blr blt boa bob boe bol boo bop bor bot bpa bpb bpe bpl bpo bpp bpr bpt bra brb bre brl bro brp brr brt bta btb bte btl bto btp btr btt eaa eab eae eal eao eap ear eat eba ebb ebe ebl ebo ebp ebr ebt eea eeb eee eel eeo eep eer eet ela elb ele ell elo elp elr elt eo- eoa eob eoe eol eoo eop eor eot ep- epa epb epe epl epo epp epr ept era erb ere erl ero erp err ert eta etb ete etl eto etp etr ett l-p la- laa lab lae lal lao lap lar lat lba lbb lbe lbl lbo lbp lbr lbt lea leb lee lel leo lep ler let lla llb lle lll llo llp llr llt loa lob loe lol loo lop lor lot lpa lpb lpe lpl lpo lpp lpr lpt lra lrb lro lrp lrr lrt lta ltb lte ltl lto ltp ltr ltt oaa oab oae oal oao oap oar oat ob- oba obb obe obl obo obp obr obt oea oeb oee oel oeo oep oer oet ola olb ole oll olo olp olt oo- ooa oob ool ooo oop oor oot op- opa opb ope opl opo opp opr opt or- ora orb ore orl oro orp orr ort ot- ota otb ote otl oto otp otr ott p-p paa pab pae pal pao pap par pat pba pbb pbe pbl pbo pbp pbr pbt pea peb pee pel peo pep per pet pla plb ple pll plo plp plr plt poa pob poe pol poo pop por pot ppa ppb ppe ppl ppo ppp ppr ppt pra prb pre prl pro prp prr prt pt- pta ptb pte ptl pto ptp ptr ptt ra- raa rab rae ral rao rap rar rat rba rbb rbe rbl rbo rbp rbr rbt re- rea reb ree rel reo rep rer ret rla rle rll rlo rlp rlr rlt roa rob roe rol roo rop ror rot rpa rpb rpe rpl rpo rpp rpr rpt rra rrb rrl rrp rrr rrt rta rtb rte rtl rto rtp rtr rtt taa tab tae tal tao tap tar tat tba tbb tbe tbl tbo tbp tbr tbt te- tea teb tee tel teo tep ter tet tla tle tll tlo tlp tlr tlt to- toa tob toe tol too top tor tot tpa tpb tpe tpl tpo tpp tpr tpt tra trb tre trl tro trp trr trt tta ttb tte ttl tto ttp ttr ttt