C111123313331323113313331313331333132313331322121111331313113313221211   >>    C11112331333132311331333131333133313231333132212111133131311331322121   <<    C111123313331323113313331313331333132313331322121111331313113313221213   >>      C111123313331323113313331313331333132313331322121111331313113313221212   >>