21.   This is not the first time Argentina has considered making such a switch.

a. + switch >>共 347
light 11.46%
dimmer 3.43%
double 3.21%
off 3.10%
such 2.25%
party 2.25%
electrical 1.82%
cutoff 1.71%
sudden 1.61%
new 1.61%
such + n. >>共 1151
move 6.00%
system 1.96%
thing 1.65%
meeting 1.61%
plan 1.41%
case 1.15%
attack 1.10%
agreement 1.05%
step 1.04%
change 0.92%
switch 0.08%
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