C111123313331323113313331333133313331323131211111133132311221123122321   >>    C11112331333132311331333133313331333132313121111113313231122112312232   <<    C111123313331323113313331333133313331323131211111133132311221123122323   >>      C111123313331323113313331333133313331323131211111133132311221123122322   >>