-tree eeeee ekker ekmek ekrem emeer emere emerk emert emmer emmet emtee emtek erem- erere eretz erte erter eteke etete etree etrek etter k-mer keere kekem kemer kemet kemme kerek kerem keret kerre ketek keter kette kreek kreke kreme krete kretz meere meete meker meket memer merer meret merez merke merre merte mertk mertz meter metr- metre mette metze mezek mezez mezre mezze mmmmm mrmet mt-te mt-tk mt-tm mt-tr mt-tt mtree reeme reere reetz reeze rekem rekke remee remer remet rere- reree reret rerez retee retem reter rette rezek rt-rk t-mek teeme teket tekke terek terem teret terme terre tert- teter tetr- tette tkzee treer treet treme trere trete trett trzek ttttt tzere z-ter zemer zemke zerre zterm zzzzz