C11111211113313112113313331333133313233313113121111331323133313223323321   >>    C1111121111331311211331333133313331323331311312111133132313331322332332   <<    C11111211113313112113313331333133313233313113121111331323133313223323323   >>      C11111211113313112113313331333133313233313113121111331323133313223323322   >>