-er b-p bbb bbe bbg bbi bbp bbr bbt be- beb bee beg bei bep ber bet bgb bge bgg bgi bgp bgr bgt bi- bib bie big bii bip bir bit bpb bpe bpg bpi bpp bpr bpt brb bre brg bri brp brr brt btb bte btg bti btp btr btt ebb ebe ebg ebi ebp ebr ebt eeb eee eeg eep eer eet egb ege egg egi egp egr egt eib eie eig eii eip eir eit ep- epb epe epg epi epp epr ept erb ere erg eri erp err ert etb ete etg eti etp etr ett g-p gbe gbg gbi gbp gbr gbt ge- geb gee geg gei gep ger get ggb ggg ggi ggp ggr ggt gib gie gig gii gip gir git gpb gpe gpg gpi gpp gpr gpt grb gre grg gri grp grr grt gtb gte gtg gti gtp gtr gtt ibb ibe ibg ibi ibp ibr ibt ie- iee ieg iei iep ier iet igb ige igg igi igp igr igt iib iie iii iip iir iit ipb ipe ipg ipi ipp ipr ipt ir- irb ire irg iri irp irr irt itb ite itg iti itp itt p-p pbb pbe pbg pbi pbp pbr pbt peb pee peg pei pep per pet pgb pge pgg pgi pgp pgr pgt pib pie pig pii pip pir pit ppb ppe ppg ppi ppp ppr ppt prb pre prg pri prp prr prt pt- ptb pte ptg pti ptp ptr ptt rbb rbe rbg rbi rbp rbr rbt re- reb ree reg rei rep rer ret rgb rge rgg rgi rgp rgr rgt rib rie rig rii rip rir rit rpb rpe rpg rpi rpp rpr rpt rrb rrg rri rrp rrr rrt rtb rte rtg rti rtp rtr rtt tbb tbe tbg tbi tbp tbr tbt te- teb tee teg tei tep ter tet tgb tge tgg tgi tgp tgr tgt tib tie tig tii tip tir tit tpb tpe tpg tpi tpp tpr tpt trb tre trg tri trp trr trt ttb tte ttg tti ttp ttr ttt

bbbb bbeb bbet bbpr bbrg bebb bebe bebi beeb beeg beep beer beet begg begi beir beit bere berg beri berr bert bete beti bett bibb bibe bibi bieb bier biet bigb bige bigg bigt bipp birb bire birg biri birr birt bite bitt bpti breb bree breg brei brep brer bret brie brig brit brrr btbp btie btrt bttb ebbr eber ebit eeee eerg eete egbe egee eger eggb egge eggi eggp egir egpb egpe egpi egre egri egte eiei eier eige eigg eipr eire eitb eiti eitr epee eper epi- epie epip epit eppp eprb eprp epte erbb erbe ereb erei erer eret erg- ergg ergi erie erit erpe erre etbr etee eter etre ette etti gebe gebi geep geer geet gege gegg geie geig geir geit gepe gerb gere geri gert getb gete getg geti gett ggbt gggg gibb gibe gier giet gige gigg gigi gipe gipi gipp gire girg giri girr girt gite gper gpgp gpip gprp grbr greb gree greg grep gret grib grie grig grip grit grrr gtbr gtip i-be ibeg ibet ibge ibie ibri ibtb ieet ieie iere ieri iett iger iget igri iiie iiii iiit iitr iitt iper ipet ipie ippr ipri irbe irbp iree irer iri- irie irig irip irpe irre irri irte irti irtp itbe itep iter itet itie itri peep peer peet pegg peip peir peit pepe pepi per- pere perg peri perp perr pert pete peti petr pett pger pgib pibb pibi piep pier piet pigb pigg pigp pigt piip pipe pipi pipp pire pirg piri pirr pite piti pitr pitt pper ppgi ppib ppie ppig pppp pptt pre- preb pree preg prep pret pri- prie prig prii prri prti prtp prtr pter rbbb rbbr rebb rebe reeb reep reet rege regi regr regt reii reir reit repe repi repp repr rept rere rerg reri rert rete reti retr rett rgbe rgbi rgit rgtr rib- ribe riep rier riet rige rigg rigi ripe ripi ripp ripr ript rire riri rite riti ritt rpet rpii rrrr rtee rtei rttp tbit tbrb tbtp teer teet tegg tegi tegt teie teip teir tepe tepi tepp ter- tere teri terp terr tete teti tetr tett tibi tie- tiee tiei tiep tier tiet tige tigi tigr tiit tip- tipe tipi tipp tipt tirb tire tiri tirr tite titi titp titt tpbg tpeg tper tpir tppp tppr tpte tptp tptr tre- tree treg trei tret trge tri- trib trie trig trip trit trpe trpg trpp trte trtr ttbb tter tttt

-tree bbbee be-er beber bebti beebe beepi beeri beete begee beget begge begti beibi beier beige beire beite beppe berbe bereg berei beret berge bergi berie berig berit berre berri berte berti betee beter betie betre bett- bette betti bibbe biber bibie bibri biebe biere bieri biert bieti big-i bigge bigig bipib birgi birie biter bitit bitte bitti breer breet breg- brege bregg breit brere brett bribe brieg brier brige brigg brigi brite britt brrrr btr-t ebber ebbet ebbie eberg ebert ebibe eeeee eepee eerie eetti egger eggie eggig egret eiger eipri eirie eiter eitri eppie epptb erbbe erber erege erept erere erier erite erte erter etete etite etree etter ettie gberg gbiti gbpee geber gebet gebre geere geert geete gegge geier geige geire geite geitt gepir gerbe gerbi gerre gerri gertt getee geter getit gette getti gibbe gibbi giber gibi- giger gigge gippe gippi girei gitie gitig gitit grebe greer greet grege gregg greig greip greit grepe grete grett grieg grier griet grigg gripe gript grite grrrr i-bet iberg ibert ibeti iebet ieiri iepe ieper ierei iette iggri igigi iiiee iiiii iitti ipeti ipiti ippee ippei irbit iregi irete irite irreg irrep irrit itbig itbit itete itget itigi itire itrip itter ittre ittti p-rep pebi- pebie pebre peege peere peeri peert peete peire peirt pepee peppe peppi pept- perer peret perge peri- perie perit perre perri perte perti petbe peter petie petit petr- petre