C11111211113313112113313331333132313331322121111133313331323133313232122311   >>    C1111121111331311211331333133313231333132212111113331333132313331323212231   <<    C11111211113313112113313331333132313331322121111133313331323133313232122313   >>      C11111211113313112113313331333132313331322121111133313331323133313232122312   >>