C1111233131211111211113313231333133313331323221333133313232331321   >>    C111123313121111121111331323133313331333132322133313331323233132   <<    C1111233131211111211113313231333133313331323221333133313232331323   >>      C1111233131211111211113313231333133313331323221333133313232331322   >>