___ -- ____ - ________ ----- __ ___ __ ------- _ -- _ __ ___ ---- __ _ ------- __ )____ --- __ ___ ___ --- ____( +-- __ _ _ _ __ _ __ --+ _ __ __ _ _ __ ------- ___- _________ __ --- ---- _____ ______ ------- __ axb --% unit packet number six six six %--