-al a-a a-b a-c aaa aab aac aad aae aak aal aap ab- aba abb abc abd abe abk abl abp ac- aca acb acc acd ace ack acl acp ad- ada adb adc add ade adk adl adp aea aeb aec aed aee aek ael aep aka akb akc akd ake akk akl akp al- ala alb alc ald ale alk all alp ap- apa apb apc apd ape apk apl app b-p baa bab bac bad bae bak bal bap bba bbb bbc bbd bbe bbk bbl bbp bca bcb bcc bcd bce bck bcl bcp bda bdb bdc bdd bde bdk bdl bdp be- bea beb bec bed bee bek bel bep bka bkb bkc bke bkk bkl bkp bla blb blc bld ble blk bll blp bpa bpb bpc bpd bpe bpl bpp c-- caa cab cac cad cae cak cal cap cba cbb cbc cbd cbe cbk cbl cbp cca ccb ccc ccd cce cck ccl ccp cda cdb cdc cdd cde cdk cdl cdp ce- cea ceb cec ced cee cek cel cep cka ckb ckc ckd cl- cla clb clc cld cle clk cll clp cpa cpb cpc cpd cpe cpk cpl cpp daa dab dac dad dae dak dal dap dba dbb dbc dbd dbe dbk dbl dbp dca dcb dcc dcd dce dck dcl dcp dda ddb ddc ddd dde ddk ddl ddp de- dea deb dec ded dee dek del dep dka dkb dkc dke dkk dkl dkp dl- dla dlb dlc dld dle dlk dll dlp dpa dpb dpc dpd dpe dpk dpl dpp eaa eab eac ead eae eak eal eap eba ebb ebc ebd ebe ebk ebl ebp ec- eca ecb ecc ecd ece eck ecl ed- eda edb edc edd ede edk edl edp eea eeb eec eed eee eek eel eep eka ekb ekc ekd eke ekl ekp ela elb elc eld ele elk ell elp ep- epa epb epc epd epe epl epp ka- kaa kab kac kad kae kak kal kap kba kbb kbc kbd kbe kbk kbl kbp kca kcb kcc kcd kce kck kcl kcp kda kdb kdc kde kdk kdl kdp ke- kea keb kec ked kee kek kel kep kkb kkc kke kkk kkl kkp kl- kla klb klc kld kpa kpc kpd kpe kpk kpl kpp l-p la- laa lab lac lad lae lak lal lap lba lbb lbc lbd lbe lbk lbl lbp lca lcb lcc lcd lce lck lcl lcp lda ldb ldc ldd lde ldk ldl ldp lea leb lec led lee lek lel lep lka lkb lkl lkp lla llb llc lld lle llk lll llp lpa lpb lpc lpd lpe lpk lpl lpp p-p paa pab pac pad pae pak pal pap pba pbb pbc pbd pbe pbk pbl pbp pca pcb pcc pcd pce pck pcl pcp pda pdb pdc pdd pde pdk pdl pdp pea peb pec ped pee pek pel pep pka pkb pkc pkd pke pkl pkp pla plb plc pld ple plk pll plp ppa ppb ppc ppd ppe ppk ppl ppp