The method 17, wherein the second mode of {TAIL ~ electronic communication} is {HEAD ~ a mode} of electronic communication selected from the group consisting of a voice telephone call, an instant message, a text message, and a video call 
The method 17 , wherein the second mode of { TAIL ~ electronic communication } is { HEAD ~ a mode } of electronic communication selected from the group consisting of a voice telephone call , an instant message , a text message , and a video call
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH