codes R9,R10 R19,R20 R29, and R35

Those are relay event numbers.  R9 is the men's 200 Medley relay, R10 is the women's.  R19 & R20 are the men's and women's 200 free relays. R29 is the mixed 200 medley relay and R35 is the mixed 200 free relays.

Those are relay event numbers.  R9 is the men's 200 Medley relay, R10 is the women's.  R19 & R20 are the men's and women's 200 free relays. R29 is the mixed 200 medley relay and R35 is the mixed 200 free relays.

Thanks.