C11111211113313112113313331333133313331333132313331333133313232233131332311   >>    C1111121111331311211331333133313331333133313231333133313331323223313133231   <<    C11111211113313112113313331333133313331333132313331333133313232233131332313   >>      C11111211113313112113313331333133313331333132313331333133313232233131332312   >>