C1111233131211111211113313331312111133112113121111331322331323221311   >>    C111123313121111121111331333131211113311211312111133132233132322131   <<    C1111233131211111211113313331312111133112113121111331322331323221313   >>      C1111233131211111211113313331312111133112113121111331322331323221312   >>