a-a a-b a-c aaa aab aac aad aak aao aap aaw ab- aba abb abc abd abk abo abp abw ac- aca acb acc acd ack aco acp acw ad- ada adb adc add adk ado adp adw aka akb akc akd akk ako akp akw aoa aob aoc aod aok aoo aop aow ap- apa apb apc apd apk apo app apw aw- awa awb awc awd awk awo awp aww b-p baa bab bac bad bak bao bap baw bba bbb bbc bbd bbk bbo bbp bbw bca bcb bcc bcd bck bco bcp bda bdb bdc bdd bdk bdo bdp bdw bka bkb bkc bkk bko bkp bkw boa bob boc bod bok boo bop bow bpa bpb bpc bpd bpo bpp bpw bwa bwb bwc bwd bwk bwo bwp c-- caa cab cac cad cak cao cap caw cba cbb cbc cbd cbk cbo cbp cbw cca ccb ccc ccd cck cco ccp ccw cda cdb cdc cdd cdk cdo cdp cdw cka ckb ckc ckd cko ckw co- coa cob coc cod cok coo cop cow cpa cpb cpc cpd cpk cpo cpp cpw cw- cwa cwb cwc cwd cwk cwo cwp daa dab dac dad dak dao dap daw dba dbb dbc dbd dbk dbo dbp dca dcb dcc dcd dck dco dcp dcw dda ddb ddc ddd ddk ddo ddp ddw dka dkb dkc dkk dko dkp dkw doa dob doc dod dok doo dop dow dpa dpb dpc dpd dpk dpo dpp dpw dwa dwb dwc dwo dwp dww ka- kaa kab kac kad kak kao kap kaw kba kbb kbc kbd kbk kbo kbp kbw kca kcb kcc kcd kck kcp kda kdb kdc kdk kdo kdp kkb kkc kkk kkp koa kob koc kod kok koo kop kow kpa kpc kpd kpk kpo kpp kpw kw- kwa kwc kwd kwk kwo kwp kww oaa oab oac oad oak oao oap oaw ob- oba obb obc obd obk obo obp obw oc- oca ocb occ ocd ock oco ocp ocw oda odb odc odd odo odp oka okb okc okd okk oko okp okw oo- ooa oob ooc ood ook ooo oop oow op- opa opb opc opd opk opo opp opw owa owb owc owd owk owo owp oww p-p paa pab pac pad pak pao pap paw pba pbb pbc pbd pbk pbo pbp pbw pca pcb pcc pcd pck pco pcp pcw pda pdb pdc pdd pdk pdo pdp pka pkb pkc pkd pko pkp poa pob poc pod pok poo pop pow ppa ppb ppc ppd ppk ppo ppp ppw pwa pwb pwc pwd pwo pwp waa wab wac wad wak wao wap waw wba wbb wbc wbd wbo wbw wca wcb wcc wcd wck wco wcp wcw wda wdb wdc wdp wka wkb wkc wkd wko wkp wkw woa wob woc wod wok woo wop wow wpa wpb wpc wpd wpk wpo wpp wwa wwc wwd wwo wwp www