FLT CREW COMPLAINS SCHEDULING PRACTICE UNSAFE AND CAUSES FLT CREW FATIGUE.

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I WOULD LIKE TO BRING A POTENTIALLY DISASTROUS SITUATION TO YOUR ATTN. ENCLOSED IS A COMPUTER GENERATED SEQUENCE. I FLEW THIS SEQUENCE IN A 2-M; AUTOMATED COCKPIT MLG. I FEEL IT IS VERY UNWISE TO SCHEDULE CREWS FROM XA07 TO XX49 ON DAY ONE; FROM XC45 TO XG56 THE SECOND; AND FINALLY FROM XQ33 TO XA35 ON THE LAST DAY. I FLEW THIS WITH A NEWLY UPGRADED CAPT WITH NO PREVIOUS MLG EXPERIENCE. LNDG IN EL PASO WE CHKED INTO THE HOTEL AT JUST BEFORE XI00. THEN AFTER 2 HRS SLEEP GOT UP AT XP15. FLYING BACK TO DFW WAS BAD ENOUGH WITH THE SUN RISING AT OUR 12 O'CLOCK POS. BUT ADDING TO THE ALREADY TIRING SITUATION IS A CRP T/A. WE FLEW DFW TO CRP AND HAD TO HOLD BECAUSE CRP WAS BELOW MINIMUMS. WE HELD AT THE OM ON THE ILS WITH RVR AT 1500' UNTIL TWR VIS WAS SUFFICIENT FOR A VOR APCH TO A DIFFERENT RWY. WITH FATIGUE SETTING IN IN A BIG WAY; AS IT WAS; AND TRYING TO KEEP UP WITH LAST MINUTE CHANGES; WE WERE MAXED OUT. I SHUDDER TO THINK ABOUT EQUIP MALFUNCTION AT THAT POINT. RECOMMENDATION: FORGET ABOUT DRUG TESTING AND THE OTHER NONSENSE AND DON'T ALLOW COMPANIES TO FLY PLTS SO FAR INTO UNREASONABLE FATIGUE. OUR PAX TRUST US WITH THEIR LIVES.