t1: TORSION ATOMS=5,7,9,15 
t2: TORSION ATOMS=7,9,15,17
d1: DISTANCE ATOMS=7,17 COMPONENTS 
#PRINT ARG=(d1.[xy]),(pino) STRIDE=100 FILE=colvar FMT=%8.4f
#PRINT ARG=(d1.[xy]),(t[0-9]) STRIDE=100 FILE=colvar FMT=%8.4f
PRINT ARG=(d1\.[xy]),(d1\.[xy]) STRIDE=100 FILE=colvar FMT=%8.4f
#PRINT ARG=d1.x,d1.y STRIDE=100 FILE=colvar FMT=%8.4f
