count_events            Count the Number of Occurrences of Each Event
                        in a Sequence
create_is_aba           Create a Dummy Variable Indicating Whether a
                        Code Represents 'ABA' (1) or not (0).
generate_codes          Generate Codes for Sequences Based on Certain
                        Rules
generate_length_aba     Generate Length of Consecutive 'ABA'-Coded
                        Sequences
generate_sequences      Generate Sequences of a Given Length from a
                        Numeric Vector
