-al -ol a-a a-b a-c aaa aab aac aae aal aao aap aas ab- aba abb abc abe abl abo abp abs ac- aca acb acc ace acl aco acp acs aea aeb aec aee ael aeo aep aes al- ala alb alc ale all alo alp als aoa aob aoc aoe aol aoo aop aos ap- apa apb apc ape apl apo app aps as- asa asb asc ase asl aso asp ass b-p baa bab bac bae bal bao bap bas bba bbb bbc bbe bbl bbo bbp bbs bca bcb bcc bce bcl bco bcp bcs be- bea beb bec bee bel beo bep bes bla blb blc ble bll blo blp bls boa bob boc boe bol boo bop bos bpa bpb bpc bpe bpl bpo bpp bps bsa bsb bsc bse bsl bso bsp bss c-- caa cab cac cae cal cao cap cas cba cbb cbc cbe cbl cbo cbp cbs cca ccb ccc cce ccl cco ccp ccs ce- cea ceb cec cee cel ceo cep ces cl- cla clb clc cle cll clo clp cls co- coa cob coc coe col coo cop cos cpa cpb cpc cpe cpl cpo cpp cps csa csb csc cse csl cso csp css eaa eab eac eae eal eao eap eas eba ebb ebc ebe ebl ebo ebp ebs ec- eca ecb ecc ece ecl eco ecs eea eeb eec eee eel eeo eep ees ela elb elc ele ell elo elp els eo- eoa eob eoc eoe eol eoo eop eos ep- epa epb epc epe epl epo epp eps es- esa esb esc ese esl eso esp ess l-p la- laa lab lac lae lal lao lap las lba lbb lbc lbe lbl lbo lbp lbs lca lcb lcc lce lcl lco lcp lcs lea leb lec lee lel leo lep les lla llb llc lle lll llo llp lls loa lob loc loe lol loo lop los lpa lpb lpc lpe lpl lpo lpp lps lsa lsb lsc lse lsl lso lsp lss oaa oab oac oae oal oao oap oas ob- oba obb obc obe obl obo obp obs oc- oca ocb occ ocl oco ocp ocs oea oeb oec oee oel oeo oep oes ola olb olc ole oll olo olp ols oo- ooa oob ooc ool ooo oop oos op- opa opb opc ope opl opo opp ops os- osa osb osc ose osl oso osp oss p-p paa pab pac pae pal pao pap pas pba pbb pbc pbe pbl pbo pbp pbs pca pcb pcc pce pcl pco pcp pcs pea peb pec pee pel peo pep pes pla plb plc ple pll plo plp pls poa pob poc poe pol poo pop pos ppa ppb ppc ppe ppl ppo ppp pps ps- psa psb psc pse psl pso psp pss saa sab sac sae sal sao sap sas sba sbb sbc sbe sbl sbo sbp sbs sca scb scc sce scl sco scp scs se- sea seb sec see sel seo sep ses sla slb slc sle sll slo slp sls soa sob soc soe sol soo sop sos spa spb spc spe spl spo spp sps ss- ssa ssb ssc sse ssl sso ssp sss