-tree eeeee egers egest egger egrek egres egret ekers ekker erege erere eresk erest erets erres erses erste ersts erte erter ertes esere esker esser esses essse estee ester estes estet estre eteke etest etete etree etrek etres etter ettes geeks geere geers geert geese geest geete gegge geres gerke gerre gers- gerse gerss gerts gertt geser geske gesse geste gests getee geter gette getts greek greer grees greet grege gregg gregs grese gress grest grete grett grrrr gsses gtk-- gtsss k-gee k-set keeks keere keest keets keget kerek keres keret kerre kerrs kerse kerss keser kesse keste ketek keter kette kreek krees kreke kresk kress krest krete reege reeks reere reese reesk reest reger reges reget regge regts regtt rekke rere- reree reres reret resee reses reset reske resse reste restr rests retee reter retes retrg rette retts rt-rk seege seeke seekg seeks seere seers seese seest seete segeg seger seget segge segre segrt seker sekes sekke serer seres seret serge sergs sergt serke serre serse serss sert- serte serts seser seses sesse seste setee seter setse sette setts skeer skees skeet skegs skere skers skete skrte ssgts sssss steeg steek steer stees steet steg- stege stegs steke stere sterk sterr sters stert stete stets stger stges stker stree strek stret strrs teege teers teese teest teets teges tegre tekes teket tekke terek teres teret terge terre terrs terse tersk tert- tesse teste tests teter tetes tetr- tette treer trees treet treg- treks trere tres- trese tress trest trete trets trett trsek tsere tsets tsgts ttest ttttt