The phrase "a pattern of changing" is correct and usable in written English.
It can be used to describe a recurring or consistent trend of change in a particular context, such as behavior, data, or circumstances.
Example: "The study revealed a pattern of changing consumer preferences over the last decade."
Alternatives: "a trend of change" or "a cycle of change".
"Mr. Romney has a pattern of changing his mind," Mr. Boswell said.
"I think you'll find when you look at my opponent's record, he has a pattern of changing positions, trying to figure out which way the political winds are blowing," Mrs. Clinton told reporters this morning at Northern Westchester Hospital Center, where she championed a so-called patients' bill of rights now before Congress.
He has shown a consistent pattern of changing positions on issues to gain support, or saying anything that he thinks will help him win, especially in negative campaign ads.
Interestingly, when all validation studies are ordered by the increasing observed CVD risk (top to bottom), a clear pattern of changing calibration, from over-prediction to under-prediction (from right to left) emerges.
Nurses' work was characterised by a pattern of rapidly changing short tasks.
The case against the six men has become an example of the Bush administration's pattern of changing strategy in its legal defense of Guantánamo.
In addition, results showed positive Pearson's correlation coefficient pattern of changing pH among all treatments and control soil.
There was a pattern of shifting seaways, changing environments, all in a geographic setting.
At UCLA, an advisor for the basketball team resigned in disgust when he claimed he saw a pattern of illicit grade changing.
Thackeray said: "This is the first time that data have been analysed with enough consistency to allow a meaningful comparison of patterns of changing seasonal timing in the UK among such a diverse range of plants and animals".
