C1111233131211111211113313331333133313331333133313331333133313332233133321311   >>    C111123313121111121111331333133313331333133313331333133313331333223313332131   <<    C1111233131211111211113313331333133313331333133313331333133313332233133321313   >>      C1111233131211111211113313331333133313331333133313331333133313332233133321312   >>