d-rod ddddd do-do dodon dodoo dodro dondo donon donor doodo doorn dorno doron dorud douro drood droon droun duddo dudon dudou dundo dunno dunod dunun durno duron ndour nduru nnooo no-do no-no non-u nondo nonno noonu noord nordo noron norro norun nu-nu nudur nunon nunun nuoro nurun oddur odour odudu oduro onond onoon onorn onour ooooo ordon ordro ornon orodo orono oruro oudon ouoro ourno ro-ro rodon rodor rondo ronno roodu roond round rudno rundu runo- runon undun undur unnun unnur unoor unorn unrun unurn urour uuuuu