Hope this helps.
ATC: DER 993 speed twenty knots or greater at Mango.
DER993: Ah speed ah uh...confirm speed?
ATC: Ah what speed will you be increasing to DER 993?
DER993: Copied DER 993.
ATC: Ah DER 993 report speed that you will be doing.
DER993: Ah speed ah 2 uh 30 knots DER 993.
ATC: Copied.