C11111211113313112113313331333133313331333132313331333133313231311331322221221   >>    C1111121111331311211331333133313331333133313231333133313331323131133132222122   <<    C11111211113313112113313331333133313331333132313331333133313231311331322221223   >>      C11111211113313112113313331333133313331333132313331333133313231311331322221222   >>