Your schematic shows a 4 in serie first, then a 3 in parallel, 3S4P.
There is also the 3 in parallel first, then 4 in serie, 4S3P.
In your 3SP4, take in account that if any of the battery/cell fails, the whole string in this 4S will be faulty, not supplying anymore, turning into 2S4P
In a 4S3P...