next 1221Web site created using create-react-app. Copyrht © 2025 NEXT1221 . All rhts reserved |In the first row, there is one 1 (11). In the second, two 1s (21). In the third, there is one 2 then one 1 (1211). In the fourth, there is one 1 then one 2 then two 1s (111221). It