C11112331333132311331333133313331312111113311211113313223313331311322121   >>    C1111233133313231133133313331333131211111331121111331322331333131132212   <<    C11112331333132311331333133313331312111113311211113313223313331311322123   >>      C11112331333132311331333133313331312111113311211113313223313331311322122   >>