-er b-p bbb bbd bbe bbi bbk bbp bbr bbs bdb bdd bde bdi bdk bdp bdr bds be- beb bed bee bei bek bep ber bes bi- bib bid bie bii bik bip bir bis bkb bke bkk bkp bkr bks bpb bpd bpe bpi bpp bpr bps brb brd bre bri brk brp brr brs bsb bsd bse bsi bsk bsp bsr bss dbb dbd dbe dbi dbk dbp dbr dbs ddb ddd dde ddi ddk ddp ddr dds de- deb ded dee dei dek dep der des di- dib did die dii dik dip dir dis dkb dke dki dkk dkp dkr dks dpb dpd dpe dpi dpk dpp dpr dps drb drd dre dri drk drp drr drs dsb dsd dse dsi dsk dsp dsr dss ebb ebd ebe ebi ebk ebp ebr ebs ed- edb edd ede edi edk edp edr eds eeb eed eee eek eep eer ees eib eid eie eii eik eip eir eis ekb ekd eke eki ekp ekr eks ep- epb epd epe epi epp epr eps erb erd ere eri erk erp err ers es- esb esd ese esi esk esp esr ess i-d ibb ibd ibe ibi ibk ibp ibr ibs idb idd ide idi idk idp idr ids ie- ied iee iei iek iep ier ies iib iid iie iii iip iir iis ikb ike iki ikk ikr iks ipb ipd ipe ipi ipp ipr ips ir- irb ird ire iri irk irp irr irs is- isb isd ise isi isk isp isr iss kbb kbd kbe kbi kbk kbp kbr kbs kdb kde kdk kdp kdr kds ke- keb ked kee kei kek kep ker kes kib kid kie kii kik kip kir kis kkb kke kki kkk kkp kkr kks kpd kpe kpi kpk kpp kpr kps krd kri krk krp krr krs ksb ksd kse ksi ksk ksp ksr kss p-p pbb pbd pbe pbi pbk pbp pbr pbs pdb pdd pde pdi pdk pdp pdr pds peb ped pee pei pek pep per pes pib pid pie pii pik pip pir pis pkb pkd pke pki pkp pkr pks ppb ppd ppe ppi ppk ppp ppr pps prb prd pre pri prk prp prr prs ps- psb psd pse psi psk psp psr pss rbb rbd rbe rbi rbk rbp rbr rbs rdb rdd rde rdi rdp rdr rds re- reb red ree rei rek rep rer res rib rid rie rii rik rip rir ris rkb rke rkk rkp rks rpb rpd rpe rpi rpk rpp rpr rps rrb rrd rri rrk rrp rrr rrs rsb rsd rse rsi rsk rsp rsr rss sbb sbd sbe sbi sbk sbp sbr sbs sdb sdd sde sdi sdk sdp sdr sds se- seb sed see sei sek sep ser ses sib sid sie sii sik sip sir sis sk- skb skd ske ski skk skp skr sks spb spd spe spi spk spp spr sps sr- srb srd sre sri srk srp srr srs ss- ssb ssd sse ssi ssk ssp ssr sss

bbbb bbbs bbdd bbeb bbpr bd-r bdes bdii bdsd bebb bebe bebi bede bedi beds beeb beed beek beep 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 bipp bips birb bird bire biri birk birr birs bis- bisd bise bisk bisp biss bkpr bksp bprd brds breb bred bree brei brek brep brer bres brid brie brik bris brkb brrr brrs brsb brsr bsbd bseb bsed bsee bser bses bspp bspr bsrd bssd bsse dbpd dbrs dbss dddd ddes ddie ddps ddre ddss debe debi debs dedd dede dedi deeb deed deek deep deer dees deid deie deip deir deis dek- deke deks depe depp depr deps der- derb dere deri derk derp derr ders des- dese desi desk desp dess dibb dibe dibp dibs dide didi dids dieb died diep dier dies diii diis dike diki dipe dipp dips dird dire dirk dirr dirs dis- disd dise disi disk disp diss dkid dper dpie dprk dpsd dred dree drei drek dres drib drie drip drrs drsp dsdp dsdr dsei dsip dsps dsri dsrp dsrr dssi dssp ebbr ebbs ebed eber ebes ebid ebis edde eddi eddp edds ede- edei eder edes edie edik edip edis edss eede eeee eees eeke eeks eeps eers eese eesi eesk eid- eide eidi eidr eied eiei eier eies eike eiki eiks eipr eird eire eirs eisd eise eisk eiss ekeb eked ekek eker ekes ekis ekki ekpe eksi epee eper epes epi- epid epie epik epip epis eppp epps eprb eprp eprs epsd epsi epsp epss erbb erbe erde erdi erds ereb ered erei erer eres erie erik eris erke erki erks erpe erps erre errs erse ersi esbs esdi esdp esds esee esek eser eses esie esik esis eske esks espe espi espp esps esrd esri esse essi essp i-be ibed ibes ibid ibie ibis ibrd ibri ibss idbe ided idee ider ides idid idie idir idis idps idre idse idss iedr ieds ieie iere ieri iers iesi iesr iide iied iies iiie iiii iiis iirs iisd iisi iisp iisr ikee iker ikes ikid ikki ikri ipbk ipdi ipek iper ipes ipid ipie ippr ipri ipse ipsi ipsp ipss irbe irbp irdp irds ired iree irer ires iri- irid irie irip iris irki irks irpe irps irre irri irrs irse irsp isbd isbe isdb isde isds iseb ised isee isep iser ises isie isis ispe ispr isps isri isrp isse issi issp 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 kbpe kbpi kbpk kbpr kbps kbrb kbrd kbre kbri kbrk kbsb kbsi kbsk kbsr kbss kdbb kdbi kdbr kdbs kddb kddd kddi kddk kddr kdeb kdei kdep kdis kdkb kdkd kdkk kdkr kdpi kdpr kdps kdrb kdri kdrs