-tree b-e-d bbbee bd-re be-er bebed beber bedde bedee beder bedet beebe beede beerd beete beeth beher behet berbe berde bered bereh beret berhe berre berte berth betee beter bethe betre bett- bette bheer bhrrd bredd brede bredt breed breer breet brerd brere breth brett brrrr btr-d btr-t ddddd debed deber debet debte dedde dedee deder deede deere deeth derbe derde dered derre derth deter dethe detre dette dhedh drdre dredd drede dreed drehe drere e-dee ebbed ebber ebbet ebert edder eddre edere edred eeeee eerde ehret erbbe erber erdre erede erere erred erte erter erthe etete ether etree etter h-e-b he-he hebbe hebe- heber hedde heded heder heede heerd heere heete hehte herdt herre herte herth heter hethe hette hheth hhhhh hhtdd hrere hthrt htree rebbe reber rebet redbd redde reder reede reere reerh reeth rehed reher rehet rerde rere- reree reret reted retee reter rethe rette rhede rhett tbtbt teber tebet teder teerd teeth tehee teret terre tert- teter tethe tetr- tette thebe thede theeb theed theer ther- there thete theth thre- thred three thret treed treer treet trere trete trett trhde trhdr ttttt