C11111211113313112113313331333133313331333132313331333133313331333133321111231   >>    C1111121111331311211331333133313331333133313231333133313331333133313332111123   <<    C11111211113313112113313331333133313331333132313331333133313331333133321111233   >>      C11111211113313112113313331333133313331333132313331333133313331333133321111232   >>