C11111211113313112113313331333132313331322121111133313221121121   >>    C1111121111331311211331333133313231333132212111113331322112112   <<    C11111211113313112113313331333132313331322121111133313221121123   >>      C11111211113313112113313331333132313331322121111133313221121122   >>