C11111333133313232233133313331333132332313112113313331323133313233322121   >>    C1111133313331323223313331333133313233231311211331333132313331323332212   <<    C11111333133313232233133313331333132332313112113313331323133313233322123   >>      C11111333133313232233133313331333132332313112113313331323133313233322122   >>