-al -ol a-a a-b a-c aaa aab aac aad aal aao aap aar ab- aba abb abc abd abl abo abp abr ac- aca acb acc acd acl aco acp acr ad- ada adb adc add adl ado adp adr al- ala alb alc ald all alo alp alr aoa aob aoc aod aol aoo aop aor ap- apa apb apc apd apl apo app apr ar- ara arb arc ard arl aro arp arr b-p baa bab bac bad bal bao bap bar bba bbb bbc bbd bbl bbo bbp bbr bca bcb bcc bcd bcl bco bcp bcr bda bdb bdc bdd bdl bdo bdp bdr bla blb blc bld bll blo blp blr boa bob boc bod bol boo bop bor bpa bpb bpc bpd bpl bpo bpp bpr bra brb brd brl bro brp brr c-- caa cab cac cad cal cao cap car cba cbb cbc cbd cbl cbo cbp cbr cca ccb ccc ccd ccl cco ccp ccr cda cdb cdc cdd cdl cdo cdp cdr cl- cla clb clc cld cll clo clp clr co- coa cob coc cod col coo cop cor cpa cpb cpc cpd cpl cpo cpp cpr cra crb crc crd crl cro crp crr daa dab dac dad dal dao dap dar dba dbb dbc dbd dbl dbo dbp dbr dca dcb dcc dcd dcl dco dcp dcr dda ddb ddc ddd ddl ddo ddp ddr dl- dla dlb dlc dld dll dlo dlp dlr doa dob doc dod dol doo dop dor dpa dpb dpc dpd dpl dpo dpp dpr dra drb drc drd drl dro drp drr l-p la- laa lab lac lad lal lao lap lar lba lbb lbc lbd lbl lbo lbp lbr lca lcb lcc lcd lcl lco lcp lcr lda ldb ldc ldd ldl ldo ldp ldr lla llb llc lld lll llo llp llr loa lob loc lod lol loo lop lor lpa lpb lpc lpd lpl lpo lpp lpr lra lrb lrc lrd lro lrp lrr oaa oab oac oad oal oao oap oar ob- oba obb obc obd obl obo obp obr oc- oca ocb occ ocd ocl oco ocp ocr oda odb odc odd odl odo odp odr ola olb olc old oll olo olp oo- ooa oob ooc ood ool ooo oop oor op- opa opb opc opd opl opo opp opr or- ora orb orc ord orl oro orp orr p-p paa pab pac pad pal pao pap par pba pbb pbc pbd pbl pbo pbp pbr pca pcb pcc pcd pcl pco pcp pcr pda pdb pdc pdd pdl pdo pdp pdr pla plb plc pld pll plo plp plr poa pob poc pod pol poo pop por ppa ppb ppc ppd ppl ppo ppp ppr pra prb prc prd prl pro prp prr ra- raa rab rac rad ral rao rap rar rba rbb rbc rbd rbl rbo rbp rbr rca rcb rcc rcd rcl rco rcp rcr rda rdb rdc rdd rdl rdo rdp rdr rla rlc rld rll rlo rlp rlr roa rob roc rod rol roo rop ror rpa rpb rpc rpd rpl rpo rpp rpr rra rrb rrc rrd rrl rrp rrr