C11111211113313112113313331333133313331333132212111133132313231333131121221   >>    C1111121111331311211331333133313331333133313221211113313231323133313112122   <<    C11111211113313112113313331333133313331333132212111133132313231333131121223   >>      C11111211113313112113313331333133313331333132212111133132313231333131121222   >>