C11111333133313232233133313331333133313231312111113113313231333131231323131   >>    C1111133313331323223313331333133313331323131211111311331323133313123132313   <<    C11111333133313232233133313331333133313231312111113113313231333131231323133   >>      C11111333133313232233133313331333133313231312111113113313231333131231323132   >>