x: DISTANCE ATOMS=1,20
y: DISTANCE ATOMS=15,25

COMMITTOR ...
ARG=x,y
BASIN_LL1=0.5,0.7
BASIN_UL1=0.7,0.9
BASIN_LL2=1.5,1.7
BASIN_UL2=1.7,1.9
BASIN_LL3=0.8,0.1
BASIN_UL3=1.4,0.297
FILE=COMMITED
... COMMITTOR

PRINT ARG=x,y FILE=COLVAR STRIDE=1

ENDPLUMED
