A process 1 characterized in that the water used to produce the neutral solution was previously used as the washing water in {HEAD ~ a washing process} which precedes {TAIL ~ the first washing process} with the neutral solution  
precedes
A process 1 characterized in that the water used to produce the neutral solution was previously used as the washing water in { HEAD ~ a washing process } which precedes { TAIL ~ the first washing process } with the neutral solution
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH