C11112331333132311331333132313331333133313233121111331333133211113313111231   >>    C1111233133313231133133313231333133313331323312111133133313321111331311123   <<    C11112331333132311331333132313331333133313233121111331333133211113313111233   >>      C11112331333132311331333132313331333133313233121111331333133211113313111232   >>