C111123313331323113313331333133313331323131211111133132313321311   >>    C11112331333132311331333133313331333132313121111113313231332131   <<    C111123313331323113313331333133313331323131211111133132313321313   >>      C111123313331323113313331333133313331323131211111133132313321312   >>