x1 is recursively related to x2 by applying x3 (number) levels-of-recursion of the predicate-relation x4 (ka with two ce'u)
Rafsi -dzo- (when -dzo- is a tertau then seltau corresponds to x4 of dzoli). Synonym of refkusi for more convenience in making lujvo. tanru example for common usage: 'the day three days from now (tomorrow's tomorrow's tomorrow)' is 'le bavlamdeidzo be fi li ci'. Cf. krefu, rapli, dzoli.