C11111211113313112113313331333133313331333132313331333133313331322121212131   >>    C1111121111331311211331333133313331333133313231333133313331333132212121213   <<    C11111211113313112113313331333133313331333132313331333133313331322121212133   >>      C11111211113313112113313331333133313331333132313331333133313331322121212132   >>