itc on capital goods

if i made a capital good purchase in 17-18 and itc was 10000 and as per rule i claim 20% of rs. 2000 in 17-18 and when file of annual return there is in column 6 itc available rs. 10000 and in 6b i claim only 2000 bcos of rule and there is differnce in table 6 and i entered 8000 in itc lapsed column
so i want to know in 18-19 how i claim itc of another 20% for capital goods bcos in 18-19 annual return there is no amount will be show in table 6
so i am confuses what i do