Must be always vs Must always be

Some examples from the web:

• You must never self administer it alone; a responsible adult must be always present.
• Furthermore, fixed the target to be reached, technological measures must be always cost effective and not just a burden for customers.
• The maintenance data as specified in point M.A. must be always available during the conduct of Pilot-owner maintenance and must be complied with.
• The maintenance data as specified in point M.A.401 must be always available during the conduct of Pilot-owner maintenance and must be complied with.
• You must be always on your guard Or he will catch you with his magical lasso
• The registers of the sheep raised, indicating the total number of animals on the farm, must be always up to date.
• You have to face the sensitivities of the musicians differently, but they must be always be in harmony in the orchestra and you can't please all the people - you must play with that.

Some examples from the web:

• A grocer must always be discreet.
• Because science itself must always be open to new discoveries.
• Integrated Pest Management must always be developed flexibly.
• Where the proposal is rejected the reason must always be stated.
• Rescue aid must always be repaid.
• Human rights must always be guaranteed.
• The music gods are fierce and cruel and must always be appeased.
• Depth and shadow must always be equal.
• A doctor must always be ready to witness death, like a priest.
• One's glass must always be full.
• Insulin must always be infused under aseptic conditions.
• Severe hyperglycaemia or ketoacidosis must always be treated by a doctor, normally in a hospital.
• Whereas claims for damages must always be possible;
• Proper aseptic injection techniques must always be used when administering Lucentis.
• Sound underwriting principles must always be applied to the assessment of risks.
• These techniques must always be accompanied by inoculation of non-fixed tissue material on cell cultures.
• These heavy projects such as building high voltage grid lines must always be endorsed by local and regional citizens.
• Further, the criteria of necessity and proportionality must always be respected.
• Following the general principle of the Water Framework Directive the application of exemptions must always be reported.
• The competent authorities from which the data have been received must always be informed of any further processing.