-er a-a a-b aaa aab aae aao aap aar aaw ab- aba abb abe abo abp abr abw aea aeb aee aeo aep aer aew aoa aob aoe aoo aop aor aow ap- apa apb ape apo app apr apw ar- ara arb are aro arp arr arw aw- awa awb awe awo awp awr aww b-p baa bab bae bao bap bar baw bba bbb bbe bbo bbp bbr bbw be- bea beb bee beo bep ber bew boa bob boe boo bop bor bow bpa bpb bpe bpo bpp bpr bpw bra brb bre bro brp brr brw bwa bwb bwo bwp bwr eaa eab eae eao eap ear eaw eba ebb ebe ebo ebp ebr ebw eea eeb eee eeo eep eer eew eo- eoa eob eoe eoo eop eor eow ep- epa epb epe epo epp epr epw era erb ere ero erp err erw ewa ewb ewe ewo ewp ewr eww oaa oab oae oao oap oar oaw ob- oba obb obe obo obp obr obw oea oeb oee oeo oep oer oo- ooa oob ooo oop oor oow op- opa opb ope opo opp opr opw or- ora orb ore oro orp orr owa owb owe owo owp oww p-p paa pab pae pao pap par paw pba pbb pbe pbo pbp pbr pbw pea peb pee peo pep per pew poa pob poe poo pop por pow ppa ppb ppe ppo ppp ppr ppw pra prb pre pro prp prr prw pwa pwb pwe pwo pwp pwr ra- raa rab rae rao rap rar raw rba rbb rbe rbo rbp rbr rbw re- rea reb ree reo rep rer rew roa rob roe roo rop ror row rpa rpb rpe rpo rpp rpr rpw rra rrb rrp rrr rwa rwb rwe rwr waa wab wae wao wap war waw wba wbb wbe wbo wbr wbw wea web wee weo wep wer wew woa wob woe woo wop wor wow wpa wpb wpe wpo wpp wpr wr- wra wre wro wrp wrr wrw wwa wwe wwo wwp www