岌岌可危

可 = 丁 + 口 : Karl Marx (k) is challenging his abilities (可) in the elevator's living room (e3). He tries to force a nail (丁) into a mandarin (口), just by using his head. On top of that he tries to do so one thousand times, in order to create a bed of nails (mnemonic symbol for 可).

可 = 丁 + 口 : Alternative mnemonic symbol: kebab, from the pronunciation "ke". Karl Marx (k) is preparing a kebab (mnemonic symbol for 可) in the elevator's living room (e3). He also skewers mandarins (口) on the long steel nails (丁) and will only allow (可) his guests to eat the rest of the kebab if they eat their mandarins first.

危 = ⺈ + 厄 : Mnemonic symbol: danger ahead sign.

There is a Greek nymph in front of the Eiffel Tower who goes around to seduce and devour all kinds of people. A crane has spotted her and flies around waving with a "danger ahead" sign to warn others, but Willy Walrus doesn't even notice: he spotted the nymph and instantaneously fell in love with her.

危 = ⺈ + 厄 : Mnemonic symbol: danger ahead sign.

There is a Greek nymph in front of the Eiffel Tower who goes around to seduce and devour all kinds of people. A crane has spotted her and flies around waving with a "danger ahead" sign to warn others, but Willy Walrus doesn't even notice: he spotted the nymph and instantaneously fell in love with her.