-al a-a a-b a-c a-t aaa aab aac aae aal aap aat aax ab- aba abb abc abe abl abp abt abx ac- aca acb acc ace acl acp act acx aea aeb aec aee ael aep aet aex al- ala alb alc ale all alp alt alx ap- apa apb apc ape apl app apt apx at- ata atb atc ate atl atp att atx ax- axa axe axl axp axt axx b-p baa bab bac bae bal bap bat bax bba bbb bbc bbe bbl bbp bbt bbx bca bcb bcc bce bcl bcp bct bcx be- bea beb bec bee bel bep bet bex bla blb blc ble bll blp blt blx bpa bpb bpc bpe bpl bpp bpt bpx bta btb btc bte btl btp btt btx bxb bxl bxx c-- caa cab cac cae cal cap cat cax cba cbb cbc cbe cbl cbp cbt cbx cca ccb ccc cce ccl ccp cct ccx ce- cea ceb cec cee cel cep cet cex cl- cla clb clc cle cll clp clt clx cpa cpb cpc cpe cpl cpp cpt cpx cta ctb ctc cte ctl ctp ctt ctx cxc cxl cxp cxt cxx eaa eab eac eae eal eap eat eax eba ebb ebc ebe ebl ebp ebt ebx ec- eca ecb ecc ece ecl ect ecx eea eeb eec eee eel eep eet eex ela elb elc ele ell elp elt elx ep- epa epb epc epe epl epp ept epx eta etb etc ete etl etp ett etx ex- exa exc exe exl exp ext exx l-p la- laa lab lac lae lal lap lat lax lba lbb lbc lbe lbl lbp lbt lbx lca lcb lcc lce lcl lcp lct lcx lea leb lec lee lel lep let lex lla llb llc lle lll llp llt lpa lpb lpc lpe lpl lpp lpt lpx lta ltb ltc lte ltl ltp ltt ltx lxc lxx p-p paa pab pac pae pal pap pat pax pba pbb pbc pbe pbl pbp pbt pbx pca pcb pcc pce pcl pcp pct pcx pea peb pec pee pel pep pet pex pla plb plc ple pll plp plt plx ppa ppb ppc ppe ppl ppp ppt ppx pt- pta ptb ptc pte ptl ptp ptt ptx pxc pxe pxl pxt t-x taa tab tac tae tal tap tat tax tba tbb tbc tbe tbl tbp tbt tca tcb tcc tce tcl tcp tct tcx te- tea teb tec tee tel tep tet tex tla tlc tle tll tlp tlt tlx tpa tpb tpc tpe tpl tpp tpt tpx tta ttb ttc tte ttl ttp ttt ttx txe txl txt xaa xac xal xap xat xbc xbe xbl xbx xcb xcl xcp xcx xee xel xep xet xex xla xlb xlt xpa xpb xpc xpe xpl xpp xpt xtc xtp xtx xxl xxp xxx