-al -ol a-a a-b a-t aaa aab aae aak aal aao aap aat ab- aba abb abe abk abl abo abp abt aea aeb aee aek ael aeo aep aet aka akb ake akk akl ako akp al- ala alb ale alk all alo alp alt aoa aob aoe aok aol aoo aop aot ap- apa apb ape apk apl apo app apt at- ata atb ate atl ato atp att b-p baa bab bae bak bal bao bap bat bba bbb bbe bbk bbl bbo bbp bbt be- bea beb bee bek bel beo bep bet bka bkb bke bkk bkl bko bkp bkt bla blb ble blk bll blo blp blt boa bob boe bok bol boo bop bot bpa bpb bpe bpl bpo bpp bpt bta btb bte btk btl bto btp btt eaa eab eae eak eal eao eap eat eba ebb ebe ebk ebl ebo ebp ebt eea eeb eee eek eel eeo eep eet eka ekb eke ekl eko ekp ekt ela elb ele elk ell elo elp elt eo- eoa eob eoe eok eol eoo eop eot ep- epa epb epe epl epo epp ept eta etb ete etk etl eto etp ett k-t ka- kaa kab kae kak kal kao kap kat kba kbb kbe kbk kbl kbo kbp ke- kea keb kee kek kel keo kep ket kkb kke kkk kkl kkp kkt kl- kla klb klo klt koa kob koe kok kol koo kop kot kpa kpe kpk kpl kpo kpp kpt kta ktb kte ktk ktl kto ktp ktt l-p la- laa lab lae lak lal lao lap lat lba lbb lbe lbk lbl lbo lbp lbt lea leb lee lek lel leo lep let lka lkb lkl lkp lkt lla llb lle llk lll llo llp llt loa lob loe lok lol loo lop lot lpa lpb lpe lpk lpl lpo lpp lpt lta ltb lte ltk ltl lto ltp ltt oaa oab oae oak oal oao oap oat ob- oba obb obe obk obl obo obp obt oea oeb oee oel oeo oep oet oka okb oke okk okl oko okp ola olb ole olk oll olo olp olt oo- ooa oob ook ool ooo oop oot op- opa opb ope opk opl opo opp opt ot- ota otb ote otk otl oto otp ott p-p paa pab pae pak pal pao pap pat pba pbb pbe pbk pbl pbo pbp pbt pea peb pee pek pel peo pep pet pka pkb pke pkl pko pkp pkt pla plb ple plk pll plo plp plt poa pob poe pok pol poo pop pot ppa ppb ppe ppk ppl ppo ppp ppt pt- pta ptb pte ptk ptl pto ptp ptt taa tab tae tak tal tao tap tat tba tbb tbe tbk tbl tbo tbp tbt te- tea teb tee tek tel teo tep tet tka tkb tke tkk tkl tko tkp tkt tla tle tlk tll tlo tlp tlt to- toa tob toe tok tol too top tot tpa tpb tpe tpk tpl tpo tpp tpt tta ttb tte ttk ttl tto ttp ttt