bbbbbb bobcut boccob booboo borbor bororo botoro boubou bourou boutob brocco brocor brocot brotto brubru brutto bububu bucco- burbot burbur burotu burutu butbro buttto butucu buutuo cobbob cocco- cococo cocto- coocoo corour cortot coruco coruro courbu courr- crobot crocco cruro- cucurb curour curror cururo cutcut cutout cuttoo obturb occour ocourt octuor oooooo orcutt orrour ottoor outcut outour outtro roboto rococo rocoto rotour rotout rotrou roucou routot rubbot rubout rubro- rubutu ruocco rurutu rutour to-cut toboot tootoo tororo tortor tortou totoro totrot tourou toutou toutuo trotro trucco tuotuo turbo- turbot turtur turucu tururu tutour tuttut u-boot utroor