The phrase "are commonly left" is correct and usable in written English.
It can be used to describe something that is frequently or typically not taken or not included in a particular context.
Example: "In many cases, important details are commonly left out of the final report, leading to misunderstandings."
Alternatives: "are often omitted" or "are frequently excluded".
Cheapflights.com highlights 12 things that are commonly left at home and offers ways to survive a trip without them.
Urinary catheters are commonly left in place when no longer needed.
Despite routine counselling on infant feeding, HIV-positive women enrolled in pMTCT programmes are commonly left desperately uncertain about how best to feed their infants.
Keys are commonly left there, and leaving one there makes it easy for anyone to get in.
They are commonly left-sided for reasons that are yet to be established and most often present as a sinus tract coursing from the apex of the pyriform fossa to the upper aspect of the left thyroid lobe (Fig. 8).
The need to modify the OnabotA injection paradigm with the "follow the pain" increasing with up to 40 additional Units remains open, and is commonly left to physician's discretion.
The company decided to eliminate the subject line on messages after its research showed that it was most commonly left blank or used for an uninformative "hi" or "yo".
Videos are short and succinct and a great way of learning mathematical concepts which are commonly quickly forgotten after leaving school.
Drying alcohols are commonly found in conditioners, leave in conditioners, gels, mousses, and hairsprays as fillers.
The Ottoman Turks introduced stuffed vine leaves in the 16th century and vine leaves are commonly stuffed with a combination of meat and rice, although other fillings, such as lentils, have evolved among the various communities.
Leaves are commonly stunted, curled, or puckered; veins may be lighter than normal or banded with dark green or yellow.
