C1111133313331323223313331333133313113313231333132212111112211331   >>    C111113331333132322331333133313331311331323133313221211111221133   <<    C1111133313331323223313331333133313113313231333132212111112211333   >>      C1111133313331323223313331333133313113313231333132212111112211332   >>