C11112331312111112111133132313331323331323223313231323132313231231   >>    C1111233131211111211113313231333132333132322331323132313231323123   <<    C11112331312111112111133132313331323331323223313231323132313231233   >>      C11112331312111112111133132313331323331323223313231323132313231232   >>