#sequence  serial arrangement in which things follow in logical order or a recurrent pattern; "the sequence of names was alphabetical"
  supertype:  #series  similar things placed in order or happening one after another; "they were investigating a series of bank robberies"
  subtype:  #combination.sequence  a sequence of numbers or letters that opens a combination lock; "he forgot the combination to the safe"
  subtype:  #Fibonacci_sequence  a sequence of numbers in which each number equals the sum of the two [receding numbers
  subtype:  #codon  a specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid

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