C1111233131211111211113313331323133313231333133312111113331323221213121   >>    C111123313121111121111331333132313331323133313331211111333132322121312   <<    C1111233131211111211113313331323133313231333133312111113331323221213123   >>      C1111233131211111211113313331323133313231333133312111113331323221213122   >>