C11112331312111112111133133313231333132313331333132233312113313331213121   >>    C1111233131211111211113313331323133313231333133313223331211331333121312   <<    C11112331312111112111133133313231333132313331333132233312113313331213123   >>      C11112331312111112111133133313231333132313331333132233312113313331213122   >>