C1111133313331323223313331333133313331323131211113313221211111311211313231   >>    C111113331333132322331333133313331333132313121111331322121111131121131323   <<    C1111133313331323223313331333133313331323131211113313221211111311211313233   >>      C1111133313331323223313331333133313331323131211113313221211111311211313232   >>