I have a database structure - abbreviated version below

```
structure(list(sex1 = c("totalmaleglobal", "totalfemaleglobal", 
"totalglobal", "totalfemaleGSK", "totalfemaleglobal", 
"totalfemaleUN")), .Names = "sex1", row.names = c(NA, 6L),
class="data.frame")

```

I want to extract the words 'total', 'totalmale', 'totalfemale'

How do do this?

I tried regex with the following code

```
pattern1=c("total")
pattern2=c("totalmale")
pattern3=c("totalfemale")

daly$sex <- str_extract(daly$sex1,pattern1)
daly$sex <- str_extract(daly$sex1,pattern2)
daly$sex <- str_extract(daly$sex1,pattern3)

```

But its giving me NA.