| unexpected difficulty(expression, difficulty, problem, sudden) |
| unsuspected difficulty(expression, difficulty, problem, sudden) |
| hidden difficulty(expression, difficulty, problem, sudden) |
| sudden difficulty(expression, difficulty, problem, sudden) |
| sudden handicap(expression, difficulty, problem, sudden) |
| sudden obstruction(expression, difficulty, problem, sudden) |
| sudden problem(expression, difficulty, problem, sudden) |
| sudden trouble(expression, difficulty, problem, sudden) |
| unanticipated difficulty(expression, difficulty, problem, sudden) |
| unanticipated handicap(expression, difficulty, problem, sudden) |
| unanticipated problem(expression, difficulty, problem, sudden) |
| unanticipated trouble(expression, difficulty, problem, sudden) |
| unexpected handicap(expression, difficulty, problem, sudden) |
| unexpected obstruction(expression, difficulty, problem, sudden) |
| unexpected problem(expression, difficulty, problem, sudden) |
| unforseen difficulty(expression, difficulty, problem, sudden) |
| unforseen handicap(expression, difficulty, problem, sudden) |
| unforseen obstruction(expression, difficulty, problem, sudden) |
| unforseen trouble(expression, difficulty, problem, sudden) |
| unsuspected handicap(expression, difficulty, problem, sudden) |