-al -ol a-a a-b aaa aab aad aal aao aap aas aax ab- aba abb abd abl abo abp abs abx ad- ada adb add adl ado adp ads adx al- ala alb ald all alo alp als alx aoa aob aod aol aoo aop aos aox ap- apa apb apd apl apo app aps apx as- asa asb asd asl aso asp ass asx ax- axa axl axo axp axs axx b-p baa bab bad bal bao bap bas bax bba bbb bbd bbl bbo bbp bbs bbx bda bdb bdd bdl bdo bdp bds bdx bla blb bld bll blo blp bls blx boa bob bod bol boo bop bos box bpa bpb bpd bpl bpo bpp bps bpx bsa bsb bsd bsl bso bsp bss bsx bxb bxd bxl bxo bxx daa dab dad dal dao dap das dax dba dbb dbd dbl dbo dbp dbs dbx dda ddb ddd ddl ddo ddp dds ddx dl- dla dlb dld dll dlo dlp dls dlx doa dob dod dol doo dop dos dox dpa dpb dpd dpl dpo dpp dps dsa dsb dsd dsl dso dsp dss dsx dxd dxl dxo dxp dxs dxx l-p la- laa lab lad lal lao lap las lax lba lbb lbd lbl lbo lbp lbs lbx lda ldb ldd ldl ldo ldp lds lla llb lld lll llo llp lls loa lob lod lol loo lop los lox lpa lpb lpd lpl lpo lpp lps lpx lsa lsb lsd lsl lso lsp lss lxd lxo lxx oaa oab oad oal oao oap oas oax ob- oba obb obd obl obo obp obs obx oda odb odd odl odo odp ods ola olb old oll olo olp ols oo- ooa oob ood ool ooo oop oos oox op- opa opb opd opl opo opp ops opx os- osa osb osd osl oso osp oss osx ox- oxa oxb oxo oxx p-p paa pab pad pal pao pap pas pax pba pbb pbd pbl pbo pbp pbs pbx pda pdb pdd pdl pdo pdp pds pdx pla plb pld pll plo plp pls plx poa pob pod pol poo pop pos pox ppa ppb ppd ppl ppo ppp pps ppx ps- psa psb psd psl pso psp pss psx pxl pxs saa sab sad sal sao sap sas sax sba sbb sbd sbl sbo sbp sbs sbx sda sdb sdd sdl sdo sdp sds sla slb sld sll slo slp sls slx soa sob sod sol soo sop sos sox spa spb spd spl spo spp sps spx ss- ssa ssb ssd ssl sso ssp sss ssx sxl sxs xaa xad xal xap xas xbl xbx xda xdb xds xla xlb xld xls xoa xod xoo xop xos xox xpa xpb xpd xpl xpo xpp xps xsa xsb xsl xsp xss xxl xxo xxp xxx