-er -ol bbb bbe bbi bbl bbo bbr bbt bbx be- beb bee bei bel beo ber bet bex bi- bib bie bii bil bio bir bit bix blb ble bli bll blo blr blt blx bob boe boi bol boo bor bot box brb bre bri brl bro brr brt brx btb bte bti btl bto btr btt btx bxb bxi bxl bxo bxx ebb ebe ebi ebl ebo ebr ebt ebx eeb eee eel eeo eer eet eex eib eie eii eil eio eir eit eix elb ele eli ell elo elr elt elx eo- eob eoe eoi eol eoo eor eot erb ere eri erl ero err ert etb ete eti etl eto etr ett etx ex- exe exi exl exo exr ext exx ibb ibe ibi ibl ibo ibr ibt ibx ie- iee iei iel ier iet iex iib iie iii iil iio iir iit iix il- ilb ile ili ill ilo ilr ilt ilx io- iob ioe ioi iol ioo ior iot ir- irb ire iri irl iro irr irt irx itb ite iti itl ito itt itx ixe ixi ixl lbb lbe lbi lbl lbo lbr lbt lbx leb lee lei lel leo ler let lex lib lie lii lil lio lir lit lix llb lle lli lll llo llr llt lob loe loi lol loo lor lot lox lrb lri lro lrr lrt ltb lte lti ltl lto ltr ltt ltx lxi lxo lxr lxx o-i ob- obb obe obi obl obo obr obt obx oeb oee oei oel oeo oer oet oex oib oie oii oil oio oir oit olb ole oli oll olo olt oo- oob ooi ool ooo oor oot oox or- orb ore ori orl oro orr ort orx ot- otb ote oti otl oto otr ott ox- oxb oxi oxo oxt oxx rbb rbe rbi rbl rbo rbr rbt rbx re- reb ree rei rel reo rer ret rex rib rie rii ril rio rir rit rix rle rli rll rlo rlr rlt rob roe roi rol roo ror rot rox rrb rri rrl rrr rrt rtb rte rti rtl rto rtr rtt rtx rxr t-x tbb tbe tbi tbl tbo tbr tbt te- teb tee tei tel teo ter tet tex tib tie tii til tio tir tit tix tle tli tll tlo tlr tlt tlx to- tob toe toi tol too tor tot tox trb tre tri trl tro trr trt trx ttb tte tti ttl tto ttr ttt ttx txe txi txl txt xbe xbl xbr xbx xee xel xer xet xex xie xii xio xit xix xlb xli xlr xlt xoi xoo xor xot xox xrt xrx xti xtr xtx xxi xxl xxo xxx

bbbb bbeb bbet bblb bbox bebb bebe bebi bebo beeb beel beer beet beil beir beit bele beli bell belo belt beo- beor beot bere beri bero berr bert bete beti beto bett bibb bibe bibi bibl bibo bieb biel bier biet bile bili bill bilo bilt bio- bioi biol biot biox birb bire biri birl biro birr birt birx bite bito bitt bitx bixi blbt bleb blee blei bleo blet blio blir blit blix blob bloo blot bobb bobe bobi bobo boee boel boeo boer boet boi- boie boii boil boit bole boli boll bolo bolt boob booe bool boor boot boox bor- bore bori boro borr bort botb bote boti boto bott breb bree brei brel breo brer bret brex brie bril brio brit brix brob broe brol broo bror brot brox brrr btex btie btob btor btrt bttb ebbo ebbr ebel eber ebit ebix ebli eboe ebol eboo ebor ebox ebro eeee eele eero eete eext eiei eier eile eire eitb eiti eito eitr el-b elbe elbi elbo elee eleo eler elet elex elie elil elio elit elix elle elli ello eloi elro elte elto eoir eole eoli eolo eore eori eorl eoto er-x erbb erbe ereb erei erel erer eret erie eril erio erit erle erli erll erob eroe eroi erol eroo erre erro ertl etbr etee etel eter etio etix etoe etox etre etro ette etti etto exel exer exit exo- exor exrx exte extl extr i-be ibet ibex ibie ible ibot ibox ibri ibro ibtb ibtl ieet ieie ieio iele iere ieri iett iiie iiii iiio iiit iioi iioo iitr iitt ilbx ile- ileo iler ilet ilex ilie ilio ilir ilit ill- ille illi illo illt iloo ilot ilre ilxx iobi ioee ioel ioii ioio ioit iole iolo iooi iooo iore iori iote ioto irbe iree irel irer irex iri- irie iril irio irix irlb irob irre irri irte irti itbe itel iter itet itex itie itil itll itoi itol itoo itor itri itto ixil ixxi lblr lbrt lebo leel leer leet leib leie leil leio leir leit leix lele leli lell lelo leoi leor leox lere lero lert lete leti leto lett lexi lext lexx libe libo libr libx lieb liel lier liet liii liir lilb lile lili lill lilo lilt lio- lior lire liri lirl liro lirr lirt litb lite liti litl lito litr litt lixi lixt llet llll lloo lob- lobb lobe lobi lobo loeb loei loir loit loix lole loli loll lolo loob looe lool loor loot lore lori loro lote loti lotl loto lotr lott lox- loxo lroi lrrr ltbl ltee ltib lttr lxii lxxi lxxx o-eo obbo obel ober obet obex obie obit obix oble oboe oboi obol obor obot obox obre obri obro oeil oele oere oeti oier oiii oire oirt oiti olbo ole- olei oleo oler olet olib olie olio olit olle olli ollo olor olot oobe oobi ooer oolo oooo oore oort ootb orbb orbe orbi orbo ore- oreb orel oreo orer orex ori- orie oril orio orit orix orle orlo oro- oroe oror orot orri orro orte orto otee oter otit oto- otoe otoo otor otre otro otte otti otto oxer oxi- oxie oxo- oxox oxxo rbbb rbbr rble rebb rebe rebo reeb reel reet reii reil reir reit relb rele rell relo relt