Third ward: schutzen
Third ward can be beset by schutzen, which closes the line of the ward's natural strike (p.23).
If third ward omits his actions, the besetter strikes (p.25).
The counter to the besetment is an overbind, leading to a strike; (p.24)
The counter to the overbind is to close the line of the bind and enter with a wrap. (p.24)
(page references as in Porzio, Mele)