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done or happening every other time
happening in a back-and-forth pattern
serving as an substitute option
(of leaves, branches, etc) arranged on opposite sides of the stem in a staggered pattern
describing something that exists as a different or parallel version of something else
to arrange things or people so that they follow one after the other in a repeated and predictable pattern
to come after one another in a regular, repeating sequence
(of an electric current, voltage, etc.) to change direction at regular intervals, with its value continuously fluctuating over time
to take turns doing something
to switch people between roles, tasks, or shifts in a repeated or organized way
to serve as an understudy for another actor, actress, or performer
a backup person who substitutes when the primary individual is unavailable
something that can be chosen instead of another option
