C11111333133313232233133313331333133313223313331323132233133313331321123121   >>    C1111133313331323223313331333133313331322331333132313223313331333132112312   <<    C11111333133313232233133313331333133313223313331323132233133313331321123123   >>      C11111333133313232233133313331333133313223313331323132233133313331321123122   >>