21.   The inmates stacked bed covers in the six rooms and set them ablaze, they said.

n. + cover >>共 404
cloud 16.51%
snow 5.41%
album 5.26%
manhole 5.19%
book 3.87%
forest 1.97%
seat 1.97%
bed 1.53%
tonneau 1.31%
head 1.31%
bed + n. >>共 154
sheet 17.84%
rest 11.34%
frame 7.62%
cover 3.90%
sore 2.79%
pillow 2.23%
hungry 2.23%
tax 1.86%
space 1.86%
liner 1.67%
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