C1111233131211111211113313331312111133132313233313223313221323131   >>    C111123313121111121111331333131211113313231323331322331322132313   <<    C1111233131211111211113313331312111133132313233313223313221323133   >>      C1111233131211111211113313331312111133132313233313223313221323132   >>