C11111333133313232233133313331333131133132313311211111211111313231312321   >>    C1111133313331323223313331333133313113313231331121111121111131323131232   <<    C11111333133313232233133313331333131133132313311211111211111313231312323   >>      C11111333133313232233133313331333131133132313311211111211111313231312322   >>