C11111333133313232233133313331333133313231312111111331311233131231   >>    C1111133313331323223313331333133313331323131211111133131123313123   <<    C11111333133313232233133313331333133313231312111111331311233131233   >>      C11111333133313232233133313331333133313231312111111331311233131232   >>