C312312111111331312111133133313331333133322331323133313331323133313222113121   >>    C31231211111133131211113313331333133313332233132313331333132313331322211312   <<    C312312111111331312111133133313331333133322331323133313331323133313222113123   >>      C312312111111331312111133133313331333133322331323133313331323133313222113122   >>