C11111211113313112113313331333133312111113331333133323223332231   >>    C1111121111331311211331333133313331211111333133313332322333223   <<    C11111211113313112113313331333133312111113331333133323223332233   >>      C11111211113313112113313331333133312111113331333133323223332232   >>