-er bbb bbd bbe bbi bbk bbr bbs bdb bdd bde bdi bdk bdr bds be- beb bed bee bei bek ber bes bi- bib bid bie bii bik bir bis bkb bke bkk bkr bks brb brd bre bri brk brr brs bsb bsd bse bsi bsk bsr bss dbb dbd dbe dbi dbk dbr dbs ddb ddd dde ddi ddk ddr dds de- deb ded dee dei dek der des di- dib did die dii dik dir dis dkb dke dki dkk dkr dks drb drd dre dri drk drr drs dsb dsd dse dsi dsk dsr dss ebb ebd ebe ebi ebk ebr ebs ed- edb edd ede edi edk edr eds eeb eed eee eek eer ees eib eid eie eii eik eir eis ekb ekd eke eki ekr eks erb erd ere eri erk err ers es- esb esd ese esi esk esr ess i-d ibb ibd ibe ibi ibk ibr ibs idb idd ide idi idk idr ids ie- ied iee iei iek ier ies iib iid iie iii iir iis ikb ike iki ikk ikr iks ir- irb ird ire iri irk irr irs is- isb isd ise isi isk isr iss kbb kbd kbe kbi kbk kbr kbs kdb kde kdk kdr kds ke- keb ked kee kei kek ker kes kib kid kie kii kik kir kis kkb kke kki kkk kkr kks krd kri krk krr krs ksb ksd kse ksi ksk ksr kss rbb rbd rbe rbi rbk rbr rbs rdb rdd rde rdi rdr rds re- reb red ree rei rek rer res rib rid rie rii rik rir ris rkb rke rkk rks rrb rrd rri rrk rrr rrs rsb rsd rse rsi rsk rsr rss sbb sbd sbe sbi sbk sbr sbs sdb sdd sde sdi sdk sdr sds se- seb sed see sei sek ser ses sib sid sie sii sik sir sis sk- skb skd ske ski skk skr sks sr- srb srd sre sri srk srr srs ss- ssb ssd sse ssi ssk ssr sss

bbbb bbbs bbdd bbeb bd-r bdes bdii bdsd bebb bebe bebi bede bedi beds beeb beed beek beer bees beik beir beis beke beki beks berd bere beri berk berr bers bes- bese besk bess bibb bibe bibi bibs bide bidi bidr bids bieb bied bier bies biis bike birb bird bire biri birk birr birs bis- bisd bise bisk biss brds breb bred bree brei brek brer bres brid brie brik bris brkb brrr brrs brsb brsr bsbd bseb bsed bsee bser bses bsrd bssd bsse dbrs dbss dddd ddes ddie ddre ddss debe debi debs dedd dede dedi deeb deed deek deer dees deid deie deir deis dek- deke deks der- derb dere deri derk derr ders des- dese desi desk dess dibb dibe dibs dide didi dids dieb died dier dies diii diis dike diki dird dire dirk dirr dirs dis- disd dise disi disk diss dkid dred dree drei drek dres drib drie drrs dsdr dsei dsri dsrr dssi ebbr ebbs ebed eber ebes ebid ebis edde eddi edds ede- edei eder edes edie edik edis edss eede eeee eees eeke eeks eers eese eesi eesk eid- eide eidi eidr eied eiei eier eies eike eiki eiks eird eire eirs eisd eise eisk eiss ekeb eked ekek eker ekes ekis ekki eksi erbb erbe erde erdi erds ereb ered erei erer eres erie erik eris erke erki erks erre errs erse ersi esbs esdi esds esee esek eser eses esie esik esis eske esks esrd esri esse essi i-be ibed ibes ibid ibie ibis ibrd ibri ibss idbe ided idee ider ides idid idie idir idis idre idse idss iedr ieds ieie iere ieri iers iesi iesr iide iied iies iiie iiii iiis iirs iisd iisi iisr ikee iker ikes ikid ikki ikri irbe irds ired iree irer ires iri- irid irie iris irki irks irre irri irrs irse isbd isbe isdb isde isds iseb ised isee iser ises isie isis isri isse issi issr isss k-id kbbb kbbd kbbe kbbi kbbk kbbr kbbs kbdb kbde kbdi kbdr kbds kbeb kbed kbee kbek kber kbes kbib kbid kbie kbik kbis kbkb kbkk kbkr kbrb kbrd kbre kbri kbrk kbsb kbsi kbsk kbsr kbss kdbb kdbi kdbr kdbs kddb kddd kddi kddk kddr kdeb kdei kdis kdkb kdkd kdkk kdkr kdrb kdri kdrs kdsd kdsk kdsr kdss kebb kebe kebi kebr kedb kedd kede kedi kedr keds keed keek keer kees keib keid keii keik keir keis kekb keke keki keks ker- kerb kere keri kerk kerr kers kesb kesd kesi kesk kesr kess kibb kibe kibi kibr kibs kidb kidd kide kidi kidk kidr kids kier kies kiid kiii kiik kiis kikd kiki kikk kikr kirb kiri kirk kirr kirs kisd kise kisi kisk kisr kiss kkbb kkbd kkbe kkbi kkbr kkbs kkdd kked kkid kkik kkkk kkrb kkre kkrk kkrr kkrs kksd kkse kksi kksr kkss krbb krbd krbe krbi krbk krbr krdd krde krdr krds kreb kred kree krei krek kres krib krid krik kris krkd krke krki krkk krkr krks krrb krre krri krrk krrr krrs krsd krse krsk krsr krss ksbi ksbr ksbs ksdi ksdk ksdr ksds ksed ksee ksei ksek kser ksib ksid ksii ksik ksir ksis kskb kskd kske kskk kskr ksks ksrb ksrr ksrs ksse kssi kssr ksss rbbb rbbr rbbs rbds rbis rbsd rbss rder rebb rebe rebk rebs redd rede redi redr reds reeb reed reek rees reid reii reik reir reis reke reki reks rerd rere reri rers rese resi ress rib- ribe ribs ridd ride ridi rids ried riek rier ries riis rike riki rikk rire riri rirs risd rise risi risk riss rkss rred rrrr rsbi rsdd rsds rsee rsid rsis rsre s-ib s-ii sbbs sbds sber sbrk sbsd sbse sbsi sdds sder sdes sdib sdrs sdss se-d se-e se-i se-k se-s sebe sebi sebs sede seds seeb seed seek seer sees seid seie seii seik seir seis seke seki sekk serb