C1111133313331323223313331333133313311211111211331333131133133312111112321   >>    C111113331333132322331333133313331331121111121133133313113313331211111232   <<    C1111133313331323223313331333133313311211111211331333131133133312111112323   >>      C1111133313331323223313331333133313311211111211331333131133133312111112322   >>