a-a a-b aaa aab aae aak aao aas aaw ab- aba abb abe abk abo abs abw aea aeb aee aek aeo aes aew aka akb ake akk ako aks akw aoa aob aoe aok aoo aos aow as- asa asb ase ask aso ass asw aw- awa awb awe awk awo aws aww baa bab bae bak bao bas baw bba bbb bbe bbk bbo bbs bbw be- bea beb bee bek beo bes bew bka bkb bke bkk bko bks bkw boa bob boe bok boo bos bow bsa bsb bse bsk bso bss bsw bwa bwb bwk bwo bws eaa eab eae eak eao eas eaw eba ebb ebe ebk ebo ebs ebw eea eeb eee eek eeo ees eew eka ekb eke eko eks eo- eoa eob eoe eok eoo eos eow es- esa esb ese esk eso ess esw ewa ewb ewe ewk ewo ews eww ka- kaa kab kae kak kao kas kaw kba kbb kbe kbk kbo kbs kbw ke- kea keb kee kek keo kes kew kkb kke kkk kks koa kob koe kok koo kos kow ksa ksb kse ksk kso kss ksw kw- kwa kwk kwo kws kww oaa oab oae oak oao oas oaw ob- oba obb obe obk obo obs obw oea oeb oee oeo oes oka okb oke okk oko oks okw oo- ooa oob ook ooo oos oow os- osa osb ose osk oso oss osw owa owb owe owk owo ows oww saa sab sae sak sao sas saw sba sbb sbe sbk sbo sbs sbw se- sea seb see sek seo ses sew sk- ska skb ske skk sko sks skw soa sob soe sok soo sos sow ss- ssa ssb sse ssk sso sss ssw swa swb swe swk swo sws waa wab wae wak wao was waw wba wbb wbe wbo wbs wbw wea web wee wek weo wes wew wka wkb wke wko wks wkw woa wob woe wok woo wos wow wsa wsb wse wsk wso wss wsw wwa wwe wwo www