Non-heading? (NF)

NF0179 NF0247 NF0490 NF0758 NF1071 NF1122 NF1443 NF2191 NF2907 NF3172 NF3366 NF3943 NF4089 NF4177 NF4221 NF4310 NF4357 NF4424 NF4516 NF4542 NF4618 NF4704 NF4770 NF5122 NF5666 NF6288 NF6545 NF6554 NF6660 NF6881 NF7675 NF7878