C11111211113313112113313331333133313231323223313113313231333211221   >>    C1111121111331311211331333133313331323132322331311331323133321122   <<    C11111211113313112113313331333133313231323223313113313231333211223   >>      C11111211113313112113313331333133313231323223313113313231333211222   >>