Examination result

Hello,the are 38 pupils in the class,the position of the child is 31st,,number on roll 38
This is her result scores
63 :B :22nd :good
33 :D- :33rd :fail
47 :D :35th :credit
54 :c :16th :credit
52 :c :32nd :credit
64 :B :25th :good
53 :c :30th :credit
51 :c :33rd :credit
pls check dis result once again and tell neither s like dat.
Or there is an error.