[R] Combining Differnt columns in one single column

[anteneh asmare]

Dear All, I have the following column name in different data frame and
different size
ID_names1 <- paste0("id0000",1:9)
ID_names2 <- paste0("id000",10:99)
ID_names3 <- paste0("id00",100:999)
ID_names4 <- paste0("id0",1000:9999)
ID_names5 <- paste0("id",10000:50000)
Dose it possible to combine in to a single column in r?
Best,
Hana