-they stand over you- elevate or attack legs
-they stand and drive one knee forward- spider/dlr
-they try to plant your feet on floor- readjust hips, arm drag series?
-they try to throw legs above head- readjust hips, shimmy shoulders back
big question mark-
-they base back and try to pass on knees while keeping arms tight?
switch to butterfly guard?
-they keep weight on top of you- frazatto sweep
-they stand straight up or try to knee slide- spin underneath
-they base backwards- x-guard entry
-look into langhi sweep