-er a-a a-b a-t aaa aab aae aan aar aas aat aaw ab- aba abb abe abn abr abs abt abw aea aeb aee aen aer aes aet aew an- ana anb ane ann anr ans ant ar- ara arb are arn arr ars art arw as- asa asb ase asn asr ass ast asw at- ata atb ate atn atr ats att atw aw- awa awb awe awn awr aws awt aww baa bab bae ban bar bas bat baw bba bbb bbe bbn bbr bbs bbt bbw be- bea beb bee ben ber bes bet bew bna bnb bne bnn bnr bns bnt bnw bra brb bre brn brr brs brt brw bsa bsb bse bsn bsr bss bst bsw bta btb bte btn btr bts btt btw bwa bwb bwr bws eaa eab eae ean ear eas eat eaw eba ebb ebe ebn ebr ebs ebt ebw eea eeb eee een eer ees eet eew en- ena enb ene enn enr ens ent enw era erb ere ern err ers ert erw es- esa esb ese esn esr ess est esw eta etb ete etn etr ets ett etw ewa ewb ewe ewr ews ewt eww naa nab nae nan nar nas nat naw nba nbb nbe nbn nbr nbs nbt nbw ne- nea neb nee nen ner nes net new nna nnb nne nnn nns nnt nnw nra nrb nre nrn nrr nrs nrt nrw nsa nsb nse nsn nsr nss nst nsw nta ntb nte ntn ntr nts ntt nwa nwb nwe nwn nwr nws nwt ra- raa rab rae ran rar ras rat raw rba rbb rbe rbn rbr rbs rbt rbw re- rea reb ree ren rer res ret rew rna rnb rnn rnr rns rnt rnw rra rrb rrn rrr rrs rrt rsa rsb rse rsn rsr rss rst rsw rta rtb rte rtn rtr rts rtt rtw rwa rwb rwe rwr rws saa sab sae san sar sas sat saw sba sbb sbe sbn sbr sbs sbt sbw se- sea seb see sen ser ses set sew sna snb sne snn snr sns snt snw sr- sra srb sre srn srr srs srt srw ss- ssa ssb sse ssn ssr sss sst ssw sta stb ste stn str sts stt stw swa swb swe swn swr sws swt taa tab tae tan tar tas tat taw tba tbb tbe tbn tbr tbs tbt te- tea teb tee ten ter tes tet tew tna tnb tne tnn tnr tns tnt tnw tra trb tre trn trr trs trt trw tsa tsb tse tsn tsr tss tst tsw tta ttb tte ttn ttr tts ttt ttw twa twb twe twn twr tws twt tww waa wab wae wan war was wat waw wba wbb wbe wbn wbr wbs wbt wbw wea web wee wen wer wes wet wew wn- wna wne wnn wns wnt wnw wr- wra wre wrn wrr wrs wrt wrw wsa wsb wse wsn wsr wss wst wsw wta wtb wtn wtr wts wtt wtw wwa wwe wwn wwt www