-al a-a a-b a-c aaa aab aac aad aae aal aap aas ab- aba abb abc abd abe abl abp abs ac- aca acb acc acd ace acl acp acs ad- ada adb adc add ade adl adp ads aea aeb aec aed aee ael aep aes al- ala alb alc ald ale all alp als ap- apa apb apc apd ape apl app aps as- asa asb asc asd ase asl asp ass b-p baa bab bac bad bae bal bap bas bba bbb bbc bbd bbe bbl bbp bbs bca bcb bcc bcd bce bcl bcp bcs bda bdb bdc bdd bde bdl bdp bds be- bea beb bec bed bee bel bep bes bla blb blc bld ble bll blp bls bpa bpb bpc bpd bpe bpl bpp bps bsa bsb bsc bsd bse bsl bsp bss c-- caa cab cac cad cae cal cap cas cba cbb cbc cbd cbe cbl cbp cbs cca ccb ccc ccd cce ccl ccp ccs cda cdb cdc cdd cde cdl cdp cds ce- cea ceb cec ced cee cel cep ces cl- cla clb clc cld cle cll clp cls cpa cpb cpc cpd cpe cpl cpp cps csa csb csc csd cse csl csp css daa dab dac dad dae dal dap das dba dbb dbc dbd dbe dbl dbp dbs dca dcb dcc dcd dce dcl dcp dcs dda ddb ddc ddd dde ddl ddp dds de- dea deb dec ded dee del dep des dl- dla dlb dlc dld dle dll dlp dls dpa dpb dpc dpd dpe dpl dpp dps dsa dsb dsc dsd dse dsl dsp dss eaa eab eac ead eae eal eap eas eba ebb ebc ebd ebe ebl ebp ebs ec- eca ecb ecc ecd ece ecl ecs ed- eda edb edc edd ede edl edp eds eea eeb eec eed eee eel eep ees ela elb elc eld ele ell elp els ep- epa epb epc epd epe epl epp eps es- esa esb esc esd ese esl esp ess l-p la- laa lab lac lad lae lal lap las lba lbb lbc lbd lbe lbl lbp lbs lca lcb lcc lcd lce lcl lcp lcs lda ldb ldc ldd lde ldl ldp lds lea leb lec led lee lel lep les lla llb llc lld lle lll llp lls lpa lpb lpc lpd lpe lpl lpp lps lsa lsb lsc lsd lse lsl lsp lss p-p paa pab pac pad pae pal pap pas pba pbb pbc pbd pbe pbl pbp pbs pca pcb pcc pcd pce pcl pcp pcs pda pdb pdc pdd pde pdl pdp pds pea peb pec ped pee pel pep pes pla plb plc pld ple pll plp pls ppa ppb ppc ppd ppe ppl ppp pps ps- psa psb psc psd pse psl psp pss saa sab sac sad sae sal sap sas sba sbb sbc sbd sbe sbl sbp sbs sca scb scc scd sce scl scp scs sda sdb sdc sdd sde sdl sdp sds se- sea seb sec sed see sel sep ses sla slb slc sld sle sll slp sls spa spb spc spd spe spl spp sps ss- ssa ssb ssc ssd sse ssl ssp sss