C11111333133313232233133313331333133313231333133313113313332232123231323221   >>    C1111133313331323223313331333133313331323133313331311331333223212323132322   <<    C11111333133313232233133313331333133313231333133313113313332232123231323223   >>      C11111333133313232233133313331333133313231333133313113313332232123231323222   >>