KT FE March 2021 SEM I 1T01831_CBCGS_C Scheme 1T01811_CBSGS (R12) 1T01821_CBCGS (R16) SEM II 1T01832_CBCGS_C-Scheme 1T01812_CBSGS (R12) 1T01822_CBCGS (R16)