C11111211113313112113313331333132313331322121111133313331333133313223313232131   >>    C1111121111331311211331333133313231333132212111113331333133313331322331323213   <<    C11111211113313112113313331333132313331322121111133313331333133313223313232133   >>      C11111211113313112113313331333132313331322121111133313331333133313223313232132   >>