C1111233131211111211113313331333133313231333132313331333133313331323221323111   >>    C111123313121111121111331333133313331323133313231333133313331333132322132311   <<    C1111233131211111211113313331333133313231333132313331333133313331323221323113   >>      C1111233131211111211113313331333133313231333132313331333133313331323221323112   >>