C11111333133313232233133313331333133313231313131211113313233322121   >>    C1111133313331323223313331333133313331323131313121111331323332212   <<    C11111333133313232233133313331333133313231313131211113313233322123   >>      C11111333133313232233133313331333133313231313131211113313233322122   >>