-er bbb bbe bbg bbi bbk bbo bbr bbt be- beb bee beg bei bek beo ber bet bgb bge bgg bgi bgk bgo bgr bgt bi- bib bie big bii bik bio bir bit bkb bke bkg bkk bko bkr bkt bob boe bog boi bok boo bor bot brb bre brg bri brk bro brr brt btb bte btg bti btk bto btr btt ebb ebe ebg ebi ebk ebo ebr ebt eeb eee eeg eek eeo eer eet egb ege egg egi ego egr egt eib eie eig eii eik eio eir eit ekb eke ekg eki eko ekr ekt eo- eob eoe eog eoi eok eoo eor eot erb ere erg eri erk ero err ert etb ete etg eti etk eto etr ett gbe gbg gbi gbk gbo gbr gbt ge- geb gee geg gei gek geo ger get ggb ggg ggi ggo ggr ggt gib gie gig gii gik gio gir git gkb gko gkt gob goe gog goi gok goo gor got grb gre grg gri grk gro grr grt gtb gte gtg gti gtk gto gtr gtt ibb ibe ibg ibi ibk ibo ibr ibt ie- iee ieg iei iek ier iet igb ige igg igi igk igo igr igt iib iie iii iio iir iit ikb ike iki ikk iko ikr ikt io- iob ioe iog ioi ioo ior iot ir- irb ire irg iri irk iro irr irt itb ite itg iti itk ito itt k-t kbb kbe kbi kbk kbo kbr ke- keb kee keg kei kek keo ker ket kgb kgi kgo kib kie kig kii kik kio kir kit kkb kke kki kkk kkr kkt kob koe kog koi kok koo kor kot krg kri krk kro krr krt ktb kte ktg ktk kto ktr ktt o-i ob- obb obe obg obi obk obo obr obt oeb oee oeg oei oeo oer oet oge ogg ogi ogo ogt oib oie oii oik oio oir oit okb oke okg oki okk oko okr oo- oob oog ooi ook ooo oor oot or- orb ore org ori ork oro orr ort ot- otb ote otg oti otk oto otr ott rbb rbe rbg rbi rbk rbo rbr rbt re- reb ree reg rei rek reo rer ret rgb rge rgg rgi rgk rgo rgr rgt rib rie rig rii rik rio rir rit rkb rke rkg rkk rko rkt rob roe rog roi rok roo ror rot rrb rrg rri rrk rrr rrt rtb rte rtg rti rtk rto rtr rtt tbb tbe tbg tbi tbk tbo tbr tbt te- teb tee teg tei tek teo ter tet tgb tge tgg tgi tgk tgo tgr tgt tib tie tig tii tik tio tir tit tkb tke tkg tkk tko tkr tkt to- tob toe tog toi tok too tor tot trb tre trg tri trk tro trr trt ttb tte ttg tti ttk tto ttr ttt

bbbb bbeb bbet bbrg bebb bebe bebi bebo beeb beeg beek beer beet begg begi bego beik beir beit beke beki beko beo- beok beor beot bere berg beri berk bero berr bert bete beti beto bett bibb bibe bibi bibo bieb bier biet bigb bige bigg bigo bigt bike biko bio- biog bioi biot birb bire birg biri birk biro birr birt bite bito bitt bobb bobe bobi bobo boee boeo boer boet boge bogg bogi bogo bogt boi- boie boii boit boke boki boko boob booe boog book boor boot bor- bore borg bori bork boro borr bort botb bote boti boto bott breb bree breg brei brek breo brer bret brie brig brik brio brit brkb brob broe brog brok broo bror brot brrr btek btie btob btor btrt bttb ebbo ebbr eber ebit eboe eboo ebor ebro eeee eeke eerg eero eete egbe egee eger eggb egge eggi eggo egir ego- egoi egor egot egre egri egte egtk eiei eier eige eigg eike eiki eiko eire eitb eiti eito eitr ekeb ekek eker eket ekki ekoi eoir eore eori eoto erbb erbe ereb erei erer eret erg- ergg ergi ergo erie erik erio erit erke erki erob eroe eroi eroo erre erro etbr etee eter etik etio etoe etok etre etro ette etti etto gbbo gebe gebi geek geer geet gege gegg gego geie geig geir geit geki geko geo- geog gerb gere geri gero gert getb gete getg geti getk geto gett ggbt gggg gibb gibe gier giet gige gigg gigi gigo giog gioi gire girg giri girk giro girr girt gite gito gobe gobi gobo goer gogi gogo goit goke goog gooi gook goor goot gorb gore gorg gori goro gorr gort gote goti goto gott grbr greb gree greg gret grib grie grig grit grob grog groi grok groo gror grot grrr gtbr gtoe i-be i-go ibeg ibet ibge ibie ibot ibri ibro ibtb ieet ieie ieio iere ieri iett igbo iger iget igoe igoo igor igot igri iiie iiii iiio iiit iioi iioo iitr iitt ikee iker ikig ikki ikko ikoo ikri iobi ioee iogt ioii ioio ioit ioke ioko iooi iooo iore iorg iori iote ioto irbe iree irer iri- irie irig irio irki irob irre irri irte irti itbe itek iter itet itgo itie itko itoi itoo itor itri itto kbbb kbbe kbbg kbbi kbbk kbbo kbbr kbbt kbeb kbee kbek kbeo kber kbet kbgb kbge kbgg kbgo kbgr kbgt kbib kbie kbig kbik kbio kbit kbkb kbkg kbkk kbko kbkr kbob kboe kboi kbok kboo kbot kbrb kbre kbrg kbri kbrk kbro kbrt kbtb kbte kbtk kbto kbtr kbtt kebb kebe kebi kebr kebt keek keer keet kege kegg kegi kegk kegr keib keig keii keik keio keir kekb keke keki keko keok ker- kerb kere keri kerk kero kerr kert ket- kete keti ketk keto ketr kett kgbb kgbr kgbt kgeb kgeo kget kggg kggi kggo kggr kgio kgir kgoe kgor kgot kgrb kgre kgrg kgri kgrk kgro kgrr kgrt kgtk kgto kibb kibe kibg kibi kibo kibr kibt kier kigo