C11111211113313112113313331333133313231323223313231333131233231   >>    C1111121111331311211331333133313331323132322331323133313123323   <<    C11111211113313112113313331333133313231323223313231333131233233   >>      C11111211113313112113313331333133313231323223313231333131233232   >>