The percentage of RET is even greater than with IF (114 [17.0%], almost twice the percentage of CON [9.4%]) as is that of Rough Shifts (100 [14.9%], almost three times the percentage of Smooth Shifts [5.2%]).
rank: rank CFs according to grammatical function, linear order, a combination of the two as in Gordon, Grosz, and Gillion (1993), or information status as in Strube and Hahn (1999).