C1111233133313231133133313331333133313231312111133133313233313331323112311   >>    C111123313331323113313331333133313331323131211113313331323331333132311231   <<    C1111233133313231133133313331333133313231312111133133313233313331323112313   >>      C1111233133313231133133313331333133313231312111133133313233313331323112312   >>