C11112331312111112111133132313331333133313232212111133133112133131   >>    C1111233131211111211113313231333133313331323221211113313311213313   <<    C11112331312111112111133132313331333133313232212111133133112133133   >>      C11112331312111112111133132313331333133313232212111133133112133132   >>