some text ###RAND{1a|###RAND{2a|2b|2c|###RAND{3a|3b|3c|3d}|2d}|1b|1c|1d} some text
some text ###RAND{1a|###RAND{2a|2b|2c|3b|2d}|1b|1c|1d} some text
some text ###RAND{1a|2d|1b|1c|1d} some text
some text 1c some text