C1111133313331323223313331333133313331333231333112113313232212313121   >>    C111113331333132322331333133313331333133323133311211331323221231312   <<    C1111133313331323223313331333133313331333231333112113313232212313123   >>      C1111133313331323223313331333133313331333231333112113313232212313122   >>