-er c-- ccc cce ccr cct ccz ce- cec cee cer cet cez crc cre crr crt crz ctc cte ctr ctt ctz cz- czc cze czt ec- ecc ece ecr ect eec eee eer eet erc ere err ert erz etc ete etr ett etz eze ezr ezz rcc rce rcr rct re- rec ree rer ret rez rrc rrr rrt rtc rte rtr rtt rtz rze tcc tce tcr tct te- tec tee ter tet tez trc tre trr trt trz ttc tte ttr ttt tze zce zec zee zer zet zez zte ztr zzr zzt zzz

cccc ccee ccrc ccre ccrt cctc cctt cec- cece cect ceec cer- cerc cere cert cet- cete ceze crcc crce crcr crcz cre- crec cree cret crrt crtc ctec ctrc eccc ecce ecct ecrc ecrr ect- ectc eeee eerc eetc eete eeze ercc erce erec erer eret erez errc erre ertz etcc etec etee eter etre ette ezer rccc rcet rctc recc rece recr rect recz reet rere rert rete retr rett retz reze rrrr rtcc rtce rtee tccc tctc tecr tect teec teer teet teez ter- terc tere terr tete tetr tett tetz tezz trcc tre- trec tree tret trez trtc trte trtr tter tttt tzzt zert zete zeze zrce zrze zzzz

-tree c-tec ccccc ccett ceere cerc- cerce cerec cerer ceret cerre certe cette crece creer crete ctree cttee ecczt eeeee erect erere eretz erte erter etete etree etter recce recet rect- recte reece reere reetz reeze rere- reree reret rerez retee reter rette terce teret terre tert- teter tetr- tette treer treet trere trete trett trzec ttttt tzere z-ter zerre zzzzz

ceecee cerete creete creeze czerce eerect errett etcetc etrez r-tree retece reteer reteet retere retree retret retter t-tree teetee teeter tercer tercet terete terrer terret terter tertre terzet tetete tetter tr-rec treece treete tretee trette tzetze zertz zezere zrece

cert-ee certeze erecter reerect reteere reterre retrete rettert tec-tec terere terreer terrere tettete treetee trettre

czertez erezee recetter trezerer

cerre-tree

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