- The four parts give me some choices in planning my sentence.
 - I have chosen a 4-1-2-3 pattern. 
 - This sentence will read, Like most birds, loons use four calls to send different messages.
 - I wrote my 4-1-2-3 pattern in the upper-left corner so I will remember to use it when I write my report. 
 - At this time I will vary 5 or 6 more varied patterns with sentences that have two, three, or four parts.