C1111121111331311211331333133313331333133313231333133313331312111112323233111   >>    C111112111133131121133133313331333133313331323133313331333131211111232323311   <<    C1111121111331311211331333133313331333133313231333133313331312111112323233113   >>      C1111121111331311211331333133313331333133313231333133313331312111112323233112   >>