0 Both can be used. A possible explanation: 02br 02br 00 staircase: to emphasize the 01b 00grouping/ensemble02b 00 of stairs02br 00 stairs: to emphasize more the 01b 00individuality02b 00 of each stair0-
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01cite10Marius Hancu12cite10Both can be used. A possible explanation: 12br
12br
10staircase: to emphasize the 11b10grouping/ensemble12b10 of stairs12br
10stairs: to emphasize more the 11b10individuality12b10 of each stair12br
12br
12blockquot