TWO ONE TWO THREE FOUR ONE TWO ONE TWO TWO THREE ONE TWO THREE THREE FOUR ONE ONE... Insert now a dot _ before_ each vowell: the successive sizes of the chunks of letters are given by the sequence itself: TW.O .ON.E TW.O THR.E.E F.O.UR .ON.E TW.O .ON.E TW.O TW.O THR.E.E .ON.E TW.O THR.E.E THR.E.E F.O.UR .ON.E .ON.E ... Again: does the sequence enter at some point into a loop? Best, É.