C1111133313331323223313331333133313113313231333132212111113332222121   >>    C111113331333132322331333133313331311331323133313221211111333222212   <<    C1111133313331323223313331333133313113313231333132212111113332222123   >>      C1111133313331323223313331333133313113313231333132212111113332222122   >>