warning: Ignored call to stop/6 in equation start/6 
warning: Ignored call to stop/6 in equation start/6 
warning: Ignored call to stop/6 in equation lbl91/6 
warning: Ignored call to stop/6 in equation lbl91/6 
warning: Ignored call to stop/6 in equation lbl101/6 
warning: Ignored call to stop/6 in equation lbl101/6