The Relationship Between Cardinals and Ordinals

There are no rules, but I see that they're related. So how is there a particular reason that seven to 11 have the ish rather than the ill their parallel his fairies must have six fingers? That would be my guess because that's the parallelism or or they used some other technology for counting that. There's some people who have ways of counting being on five on one arm, right? It starts with the fingers and then various major joints in the hand and arm.