R1E1T1R1O1G2R1A1D2I1N1G2
15 points
RETROGRADING is validvalid
RETROGRADE, [v RETROGRADED, RETROGRADES, RETROGRADING] : RETROGRADELY [v]
RETROGRADE, to cause to go back [v]
RETROGRADE, [v RETROGRADED, RETROGRADES, RETROGRADING] : RETROGRADELY [v]
RETROGRADE, to cause to go back [v]