how do I list files of a sample from different lanes?

[complexgenome]

Hi,
I have forward and reverse read per sample from different sequencing lane.
Files as:

MM-2658-DNA-N-01-01_L003_R1_001.fastq.gz
MM-2658-DNA-N-01-01_L003_R2_001.fastq.gz
MM-2658-DNA-N-01-01_L004_R1_001.fastq.gz
MM-2658-DNA-N-01-01_L004_R2_001.fastq.gz

MM-4653-DNA-N-01-01_L003_R1_001.fastq.gz
MM-4653-DNA-N-01-01_L003_R2_001.fastq.gz
MM-4653-DNA-N-01-01_L004_R1_001.fastq.gz
MM-4653-DNA-N-01-01_L004_R2_001.fastq.gz

The end goal is to create one file per sample per read (forward and reverse). E.g. MM-2658-N-R1.fastq.gz MM-2658-N-R2.fastq.gz

I have code as:

workflow {

normal_reads=Channel.fromFilePairs("/sc/t_n/MM-*-N-*_L00*_R{1,2}_*.fastq.gz")
tumor_reads=Channel.fromFilePairs("/sc/t_n/MM-*T-*_L00*_R{1,2}_*.fastq.gz")

normal_reads.view()
}

The output is correct:

[MM-2658-DNA-N-01-01_L003, [/sc/t_n/MM-2658-DNA-N-01-01_L003_R1_001.fastq.gz, /sc/t_n/MM-2658-DNA-N-01-01_L003_R2_001.fastq.gz]]
[MM-4653-DNA-N-01-01_L004, [/sc/t_n/MM-4653-DNA-N-01-01_L004_R1_001.fastq.gz, /sc/t_n/MM-4653-DNA-N-01-01_L004_R2_001.fastq.gz]]
[MM-2658-DNA-N-01-01_L004, [/sc/t_n/MM-2658-DNA-N-01-01_L004_R1_001.fastq.gz, /sc/t_n/MM-2658-DNA-N-01-01_L004_R2_001.fastq.gz]]
[MM-4653-DNA-N-01-01_L003, [/sc/t_n/MM-4653-DNA-N-01-01_L003_R1_001.fastq.gz, /sc/t_n/MM-4653-DNA-N-01-01_L003_R2_001.fastq.gz]]

How do I collect files from one sample into one list? or map/associate them with one sample?