C11111211113313112113313331333132313331322113121111331323121221   >>    C1111121111331311211331333133313231333132211312111133132312122   <<    C11111211113313112113313331333132313331322113121111331323121223   >>      C11111211113313112113313331333132313331322113121111331323121222   >>