C11111211113313112113313331333132313331322132333133313113313331322233231211   >>    C1111121111331311211331333133313231333132213233313331311331333132223323121   <<    C11111211113313112113313331333132313331322132333133313113313331322233231213   >>      C11111211113313112113313331333132313331322132333133313113313331322233231212   >>