-er -th bbb bbe bbh bbo bbr bbt be- beb bee beh beo ber bet bev bhb bhe bhh bho bhr bht bhv bob boe boh boo bor bot bov brb bre brh bro brr brt brv btb bte bth bto btr btt btv bvb bve bvh bvo bvr bvt bvv ebb ebe ebh ebo ebr ebt ebv eeb eee eeo eer eet eev ehb ehe ehh eho ehr eht ehv eo- eob eoe eoh eoo eor eot erb ere erh ero err ert erv etb ete eth eto etr ett etv evb eve evh evo evr evt evv hbb hbe hbh hbo hbr hbt hbv he- heb hee heh heo her het hev hhb hhe hhh hho hhr hht hhv hob hoe hoh hoo hor hot hov hr- hrb hre hrh hro hrr hrt hrv htb hte hth hto htr htt htv hv- hvb hvo hvr hvt hvv ob- obb obe obh obo obr obt obv oeb oee oeh oeo oer oet ohe ohh oho ohr oht oo- oob ooh ooo oor oot oov or- orb ore orh oro orr ort orv ot- otb ote oth oto otr ott otv ov- ovb ove ovh ovo ovv rbb rbe rbh rbo rbr rbt re- reb ree reh reo rer ret rev rh- rhb rhe rhh rho rhr rht rhv rob roe roh roo ror rot rov rrb rrh rrr rrt rtb rte rto rtr rtt rtv rvb rve rvh rvo rvr rvt rvv tbb tbe tbh tbo tbr tbt tbv te- teb tee teh teo ter tet tev th- thb the thh tho thr tht thv to- tob toe toh too tor tot tov trb tre trh tro trr trt trv ttb tte tth tto ttr ttt ttv tvb tve tvh tvo tvr tvt v-e vbh vbo vbr vbv veb vee veh veo ver vet vh- vhb vhe vho vht vob voe voh voo vor vot vov vrb vre vrh vrr vrt vtb vte vto vtr vtt vtv vvb vvo vvr vvt vvv

bbbb bbeb bbet bebb bebe bebo beeb beer beet behr beo- beor beot bere bero berr bert bete beth beto bett betv bevo bher bhet bhor bhot bhrt bobb bobe bobo boee boeo boer boet boho bohr boht boob booe booh boor boot bor- bore borh boro borr bort botb bote both boto bott bove bovo breb bree breo brer bret brev brob broe broh broo bror brot brrr btob btor btrt bttb ebbo ebbr eber eboe eboo ebor ebro eeee eero eete eeth eheh eher ehre ehte eore eoto erbb erbe ereb erer eret erev erob eroe eroo erre erro erth erve etbr etee eter eth- ethe etho etoe etoh etre etro ette etto etvo ever evet evoe evoo evre hebb hebe hebo hebr heeb heer heet hehe heho heor herb here hero herr hert hete heth heto hett heve hevt hhhh hobe hobo hoer hohe hoho hooe hoor hoot hore horo horr hort hotb hote hoth hoto hotr hott hove hree hrob hrtb hrte hrtv htet htoh httr hvtr o-eo obbo ober obet oboe obor obot obre obrh obro oere ohbe ohee oher ohho ohob ohoh ohre ohte ohto oobe ooer ooho oooh oooo oore oort ootb orbb orbe orbo ore- oreb oreh oreo orer orhe oro- oroe oror orot orro orte orth orto orve orvr otee oter othe otho othr oto- otoe otoh otoo otor otov otre otro otte otto ovee over ovet ovo- ovoo ovot ovre rbbb rbbr rboh rebb rebe rebo reeb reet reev rehb rehe reht reot rere rero rert rete reth reto retr rett reve revo rheb rhee rheo rhet rhob rhoh rob- robb robe robo robt roer roet roev rohe rohr roob roor root rore roro rort rote roth roto rotr rott rove rovo rrrr rtee rtve rver rvvh tbrb tebo teer teet teev teho tehr teoh teor ter- tere tero terr tete teth teto tetr tett the- theb thee theo ther thet thoe thoo thor thot thre thro thtb thtr tobe tobo tobt toee toeh toer toet toho tooh toor toot tore toro torr tort torv tote toth toto totr tott tove tovo tre- tree treo tret trev troe troo trot trte trtr ttbb tteo tter ttoe tttt tver tvhb tvro tvrr tvtv veer veet veho veht veoh veor ver- verb vere vero vert vete veth veto vetr veve vevo vhhh voer voet voho voor voot vor- vore voro vort vote voth voto vreo vret vrhe vrot vrto vver vvob vvvv

-tree bbbee be-er be-ro beber bebot beebe beete beeth beeve beher behet behot beote beoth berbe bereh beret berhe berob beroe beror berre berte berth berto betee beter bethe betoo betor betre bett- bette betto bever bevor bheer bhev bhoot bhore bo-bo bo-ho bobet bobov bobr bobre boero bohor bohot bohte booer boore boort booth borbo boree borer boret boro- boroo borot borov borre borro borth borve borvo botet botev bothe botro botte bovee breer breet breo- brere breth breto brett breve brobo broer broth broto brrrr btr-t ebber ebbet ebert eeeee eevee eever ehret eorre erbbe erber erere ereve eroor erore eroto error erte erter erthe etete ether etho- etoro etree etter evere evero everr evert evete evett eveve evoor evote h-e-b he-he he-ro hebbe hebe- heber heere heete hehte heore heroe herre herro herte herth herto herve heter hethe hette hetto hever hheth hhhhh ho-ho ho-oh hobet hoboe hobor hobro hoeve hohoe hohot hooer hoore hoort hoove horeb horhe horre horro horth horto hothe hothr hotot hotte hotto hover hovet hrere hrhov hthrt htree o-r-b obbet obert obete obhor oboro obote oboth obreb obrov oerth oh-oh ohbot ohrob ohrot ohthe oo-er ooher ooooh ooooo oothe oovoo orbot oreo- orere orero orobe orobo oroer orret orter ortet orth- orthe ortho ortoo orveh orvet otere otero other othre ototo otrov otter ottov over- overo overt ovett rebbe reber rebet reere reerh reeth reeve reher rehet rehoe rere- reree reret rerob retee reter rethe retro rette retto rever revet rheo- rhett rhoeo ro-ro robbe robbo rober robo- robor