-al a-a a-b a-c a-t aaa aab aac aae aak aal aap aat ab- aba abb abc abe abk abl abp abt ac- aca acb acc ace ack acl acp act aea aeb aec aee aek ael aep aet aka akb akc ake akk akl akp al- ala alb alc ale alk all alp alt ap- apa apb apc ape apk apl app apt at- ata atb atc ate atl atp att b-p baa bab bac bae bak bal bap bat bba bbb bbc bbe bbk bbl bbp bbt bca bcb bcc bce bck bcl bcp bct be- bea beb bec bee bek bel bep bet bka bkb bkc bke bkk bkl bkp bkt bla blb blc ble blk bll blp blt bpa bpb bpc bpe bpl bpp bpt bta btb btc bte btk btl btp btt c-- caa cab cac cae cak cal cap cat cba cbb cbc cbe cbk cbl cbp cbt cca ccb ccc cce cck ccl ccp cct ce- cea ceb cec cee cek cel cep cet cka ckb ckc ckt cl- cla clb clc cle clk cll clp clt cpa cpb cpc cpe cpk cpl cpp cpt cta ctb ctc cte ctk ctl ctp ctt eaa eab eac eae eak eal eap eat eba ebb ebc ebe ebk ebl ebp ebt ec- eca ecb ecc ece eck ecl ect eea eeb eec eee eek eel eep eet eka ekb ekc eke ekl ekp ekt ela elb elc ele elk ell elp elt ep- epa epb epc epe epl epp ept eta etb etc ete etk etl etp ett k-t ka- kaa kab kac kae kak kal kap kat kba kbb kbc kbe kbk kbl kbp kca kcb kcc kce kck kcl kcp kct ke- kea keb kec kee kek kel kep ket kkb kkc kke kkk kkl kkp kkt kl- kla klb klc klt kpa kpc kpe kpk kpl kpp kpt kta ktb ktc kte ktk ktl ktp ktt l-p la- laa lab lac lae lak lal lap lat lba lbb lbc lbe lbk lbl lbp lbt lca lcb lcc lce lck lcl lcp lct lea leb lec lee lek lel lep let lka lkb lkl lkp lkt lla llb llc lle llk lll llp llt lpa lpb lpc lpe lpk lpl lpp lpt lta ltb ltc lte ltk ltl ltp ltt p-p paa pab pac pae pak pal pap pat pba pbb pbc pbe pbk pbl pbp pbt pca pcb pcc pce pck pcl pcp pct pea peb pec pee pek pel pep pet pka pkb pkc pke pkl pkp pkt pla plb plc ple plk pll plp plt ppa ppb ppc ppe ppk ppl ppp ppt pt- pta ptb ptc pte ptk ptl ptp ptt taa tab tac tae tak tal tap tat tba tbb tbc tbe tbk tbl tbp tbt tca tcb tcc tce tck tcl tcp tct te- tea teb tec tee tek tel tep tet tka tkb tkc tke tkk tkl tkp tkt tla tlc tle tlk tll tlp tlt tpa tpb tpc tpe tpk tpl tpp tpt tta ttb ttc tte ttk ttl ttp ttt