-er -ey eee eek eer eet eey eke ekr ekt eky ere erk err ert ery ete etk etr ett ety eye eyr eyt k-t ke- kee kek ker ket key kke kkk kkr kkt kky krk krr krt kry kte ktk ktr ktt kye kyr kyt re- ree rek rer ret rey rke rkk rkt rky rrk rrr rrt rte rtk rtr rtt rty ry- rye ryk ryr ryy te- tee tek ter tet tey tke tkk tkr tkt tky tre trk trr trt try tte ttk ttr ttt tty tye tyr tyt yee yek yer yet yey ykk yre yrt yte ytk ytr ytt yye yyt yyy

eeee eeke eery eete ekek eker eket erer eret erke erre erye etee eter etre ette etty eyer eyet eyey eyke eyre eyry eyte eyyr keek keer keet keke ker- kere kerk kerr kert ket- kete ketk ketr kett kety keye keyy kkkk kkre kkrk kkrr kkrt kktk kkty kkyy kree krek kret krke krkk krkr krky krre krrk krrr krrt krry krtk krtr krty krye kryk kryy ktee ktek ktke ktkk ktkr ktkt ktre ktrk ktrr ktrt ktry kttk kttr kttt ktty ktyr kyee kyet kyke kykk kykr kyky kyre kyrk kyte kytt kyty kyyk kyyt kyyy reek reet reke rekt reky rere rert rery rete retr rett rety reye reyk rrrr rtee ryet ryke rytt ryyt teek teer teet teke ter- tere terk terr tery tete tetr tett teye teyk teyr tkey tre- tree trek tret trey trte trtr try- trye tter tttt tyee tyek tyer tyet tyke tyr- tyre tyrr tyte tytt tyty yeek yeer yeet yeke yere yerk yerr yert yery yete yett yeye yeyr ykey ykyt yrke ytky ytre yyyy

-tree eeeee ekker erere errey erte erter eteke etete etree etrek etter etyek eyere eyrer keere kerek keret kerey kerre kerry ketek keter kette ketty keyer keyre keyry kreek kreke krery krete kreye kryry ktery kyrre kytte reeky reere rekey rekke rekky rere- reree reret retee reter retry rette reyke reyte rt-rk rytte ryyty teety teket tekke terek teret terre terry tert- teter tetr- tette tetty teyre treer treet treey trere trete trett trety treye tryer tryte ttttt tyere tykke tyree tyrer tyret tytte ye-ye yeere yekke yerky yeter yette yeyre yreke ytter yyete

errett eyerer k-tree keeker kerker kertee ketter kreker kretek r-tree re-try reeker reetry reteer reteet retere retree retret retter reyter t-tree teetee teeter terete terrer terret terrye terter tertre tertry tetete tetter tettey treete treker tretee trette tretty treyte trytry tyreke tyrker tyrret yerere yerker yetter

ekekete erytyke kee-kee kreeker kyrykyy reteere reterre retrete rettert rettery teetery terere terreer terrere tettery tettete treetee trekker trettre treyter tyrette

ketterer teketeke

keek-keek

reekykeyer