C11111333133313232233133313331333131133132313311211111211111232213221311321   >>    C1111133313331323223313331333133313113313231331121111121111123221322131132   <<    C11111333133313232233133313331333131133132313311211111211111232213221311323   >>      C11111333133313232233133313331333131133132313311211111211111232213221311322   >>