C1111233131211111211113313331333133313231333132313331333133313331312131121   >>    C111123313121111121111331333133313331323133313231333133313331333131213112   <<    C1111233131211111211113313331333133313231333132313331333133313331312131123   >>      C1111233131211111211113313331333133313231333132313331333133313331312131122   >>