-er -th bbb bbe bbh bbi bbo bbr bbt be- beb bee beh bei beo ber bet bhb bhe bhh bhi bho bhr bht bi- bib bie bih bii bio bir bit bob boe boh boi boo bor bot brb bre brh bri bro brr brt btb bte bth bti bto btr btt ebb ebe ebh ebi ebo ebr ebt eeb eee eeo eer eet ehb ehe ehh ehi eho ehr eht eib eie eii eio eir eit eo- eob eoe eoh eoi eoo eor eot erb ere erh eri ero err ert etb ete eth eti eto etr ett h-i hbb hbe hbh hbi hbo hbr hbt he- heb hee heh hei heo her het hhb hhe hhh hhi hho hhr hht hib hie hih hii hio hir hit hob hoe hoh hoi hoo hor hot hr- hrb hre hrh hri hro hrr hrt htb hte hth hti hto htr htt ibb ibe ibh ibi ibo ibr ibt ie- iee iei ier iet ihb ihe ihh ihi iho ihr iht iib iie iih iii iio iir iit io- iob ioe ioh ioi ioo ior iot ir- irb ire iri iro irr irt itb ite ith iti ito itt o-i ob- obb obe obh obi obo obr obt oeb oee oeh oei oeo oer oet ohe ohh ohi oho ohr oht oib oie oii oio oir oit oo- oob ooh ooi ooo oor oot or- orb ore orh ori oro orr ort ot- otb ote oth oti oto otr ott rbb rbe rbh rbi rbo rbr rbt re- reb ree reh rei reo rer ret rh- rhb rhe rhh rhi rho rhr rht rib rie rih rii rio rir rit rob roe roh roi roo ror rot rrb rrh rri rrr rrt rtb rte rti rto rtr rtt tbb tbe tbh tbi tbo tbr tbt te- teb tee teh tei teo ter tet th- thb the thh thi tho thr tht tib tie tih tii tio tir tit to- tob toe toh toi too tor tot trb tre trh tri tro trr trt ttb tte tth tti tto ttr ttt

bbbb bbeb bbet bebb bebe bebi bebo beeb beer beet behr beir beit beo- beor beot bere beri bero berr bert bete beth beti beto bett bher bhet bhie bhir bhit bhoi bhor bhot bhrt bibb bibe bibi bibo bieb bier biet bihe bihi bio- bioi biot birb bire biri biro birr birt bite bith bito bitt bobb bobe bobi bobo boee boeo boer boet boho bohr boht boi- boie boii boit boob booe booh boor boot bor- bore borh bori boro borr bort botb bote both boti boto bott breb bree brei breo brer bret brie brih brio brit brob broe broh broo bror brot brrr btie btob btor btrt bttb ebbo ebbr eber ebit eboe eboo ebor ebro eeee eero eete eeth eheh eher ehre ehte eiei eier eiho eire eitb eith eiti eito eitr eoir eore eori eoto erbb erbe ereb erei erer eret erie erih erio erit erob eroe eroi eroo erre erro erth etbr etee eter eth- ethe etho etio etoe etoh etre etro ette etti etto h-ii hbio hbit hebb hebe hebi hebo hebr heeb heer heet hehe heho heie heih heir heit heor herb here heri hero herr hert hete heth heto hett hhhh hibi hibt hiei hier hiet hihe hihi hiho hiht hiie hiit hiob hire hiri hiro hirt hite hiti hito hitt hobe hobo hoei hoer hohe hoho hoie hoir hoit hooe hoor hoot hore hori horo horr hort hotb hote hoth hoti hoto hotr hott hree hrib hrit hrob hrtb hrte htet htoh httr i-be ibeh ibet ibie ibot ibri ibro ibtb ieet ieie ieio ieoh iere ieri iett iher ihit ihob ihre iiht iiie iiii iiio iiit iioi iioo iitr iitt iobi ioee ioii ioio ioit iooi iooo iore iori iote ioto irbe iree irer iri- irie irio irob iroh irre irri irte irti itbe iter itet ithe itie itoh itoi itoo itor itri itto o-eo obbo ober obet obie obit oboe oboi obor obot obre obrh obri obro oere oeti ohbe ohee oher ohhi ohho ohio ohob ohoh ohre ohte ohto oier oiii oire oirt oiti oobe oobi ooer ooho oooh oooo oore oort ootb orbb orbe orbi orbo ore- oreb oreh oreo orer orhe ori- orie orio orit oro- oroe oror orot orri orro orte orth orto otee oter othe otho othr otit oto- otoe otoh otoo otor otre otro otte otti otto rbbb rbbr rboh rebb rebe rebo reeb reet rehb rehe rehi reht reii reir reit reot rere reri rero rert rete reth reti reto retr rett rheb rhee rheo rhet rhib rhio rhob rhoh rib- ribe ribo rier riet riho riht riot rire riri rite rith riti rito ritt rob- robb robe robi robo robt roer roet rohe rohr roio roir roit roob rooi roor root rore rori roro rort rote roth roti roto rotr rott rrrr rtee rtei tbit tbrb tebo teer teet tehi teho tehr teie teir teoh teor ter- tere teri tero terr tete teth teti teto tetr tett the- theb thee thei theo ther thet thi- thie thio thir thoe thoo thor thot thre thri thro thtb thtr tibi tie- tiee tiei tieo tier tiet tiht tiit tirb tire tiri tiro tirr tite tith titi tito titt tobe tobi tobo tobt toee toeh toei toer toet tohi toho toie toit tooh toor toot tore tori toro torr tort tote toth toti toto totr tott tre- tree trei treo tret tri- trib trie trio trit troe troi troo trot trte trtr ttbb tteo tter ttoe tttt

-tree bbbee be-er be-ro beber bebot bebti beebe beeri beete beeth beher behet behie behir behot beibi beier beihe beire beite beith beoir beote beoth berbe bereh berei beret berhe berie berio berit berob beroe beror berre berri berte berth berti berto betee beter bethe betie betio betoo betor betre bett- bette betti betto bheer bheri bhooi bhoot bhore bibbe bibbo biber bibie bibio bibri