C111113331333132322331333133313331333132332313311211113313333123313231123311   >>    C11111333133313232233133313331333133313233231331121111331333312331323112331   <<    C111113331333132322331333133313331333132332313311211113313333123313231123313   >>      C111113331333132322331333133313331333132332313311211113313333123313231123312   >>