Next in the first line is 'di dag, we had 'di before, it means this, de means that. Those two words are easy to remember, as they somewhat resemble English.
dag here is a pluralizing particle, indicating 'di is being plural, so 'di dag means these, similarly de dag means those.
The start of the verse was yan lag, branches, components, parts, so yan lag 'di dag means these branches. Note the reverse order compared with English, first you have a subject, and then attributes related to the subject.