forow forro forto forur fotur fouro froot fruto ftrtt fu-fu furo- furor futur offof offto ofoto ofour oftwo ooooo orfor orout orrow ortoo ortwo oruro orutu ototo otour ottur ouoro outof outro outto ro-ro rofor rooft roto- rotor rotot rotto routt rowff rowof rowto ruffo rufo- ruutu toffo tofor torow torro torto tortu toto- totoo totwo touro towoo troff troft trott trout trouw truff truro ttttt tuotu turot turow turro turtu turut tutor tutow tutto tuuru twoof twoor twort twoto ufofu urour urowo urutu utro- utror uttur uturu ututo uuuuu worow wotou wourt wowow wroot wrout wrutt wuffo wufoo wwoof wwwww