BINOMIAL idioms 

"door to door", "back to back".... more lik this?

tete a tete

It sounds like you're looking for phrases similar to "door to door" and "back to back." Here are some that might fit:

1 Side by side - Closely together or in cooperation.

2 Hand in hand - Together, in close association.

3 Head to head - In direct competition or confrontation.

4 Face to face - In direct confrontation or interaction.

5 End to end - Arranged in a line with the ends touching.

6 Shoulder to shoulder - Together, supporting one another.

7 Toe to toe - In direct confrontation, often in a competitive context.

8 Neck and neck - Very close in a competition, with no clear leader.

Do any of these match what you're looking for, or do you need more examples?

Here are some more phrases similar to "door to door" and "back to back":

1 Hand over hand - A methodical or continuous action, often used in the context of climbing or pulling.

2 Neck to neck - Similar to "neck and neck," indicating a very close competition.

3 Arm in arm - Walking closely together, often in a supportive or affectionate manner.

4 Nose to nose - In close confrontation, often face to face.

5 Tip to tip - Referring to something aligned end to end, often used with objects like wings or fingers.

6 Top to bottom - Covering every part, from the highest point to the lowest.

7 Step by step - Gradually or methodically, one step at a time.

8 Line by line - Carefully reviewing or considering something, often in a detailed manner.

9 Piece by piece - Gradually assembling or understanding something part by part.

10 Word for word - Exactly as originally said or written, with no changes.

These phrases all have a rhythmic or repetitive quality similar to "door to door" and "back to back."