C1111233131211111211113313331333133313331311211331333133313331333133311232131   >>    C111123313121111121111331333133313331333131121133133313331333133313331123213   <<    C1111233131211111211113313331333133313331311211331333133313331333133311232133   >>      C1111233131211111211113313331333133313331311211331333133313331333133311232132   >>