C11111333133313232233133313331333131133132313311211111211111223311121   >>    C1111133313331323223313331333133313113313231331121111121111122331112   <<    C11111333133313232233133313331333131133132313311211111211111223311123   >>      C11111333133313232233133313331333131133132313311211111211111223311122   >>