C111123313331323113313331333132313331311331312111133132322233221   >>    C11112331333132311331333133313231333131133131211113313232223322   <<    C111123313331323113313331333132313331311331312111133132322233223   >>      C111123313331323113313331333132313331311331312111133132322233222   >>