RETRACE
Before
1: S
now3: SUU
vertical4: UUSU
horizontal
After
1: S
our, steps, lines, its, time2: SU
our, period3: SUU
period
Surrounder Phrases
blanking interval, intervals, periodvertical blanking, lines, interval, intervals, horizontalhorizontal blanking, lines, verticaltime interval, intervals, periods, period, during, stepsduring periodsintervals duringevery time, nowinterrupt lines, ourperiods duringperiod duringnow brieflyinterval duringnever interruptour routebriefly during